Fix casinh inaccuracy for imaginary part < 1.0, real part small (bug 10357).

4 files changed, 1133 insertions, 0 deletions

diff --git a/math/k_casinh.c b/math/k_casinh.c
index 4cb232a17a..145eb10110 100644
--- a/math/k_casinh.c
+++ b/math/k_casinh.c
@@ -134,6 +134,58 @@ __kernel_casinh (__complex__ double x, int adj)
 	    __imag__ res = __ieee754_atan2 (1.0 + s2, rx + s1);
 	}
     }
+  else if (ix < 1.0 && rx < 0.5)
+    {
+      if (ix >= DBL_EPSILON)
+	{
+	  if (rx < DBL_EPSILON * DBL_EPSILON)
+	    {
+	      double onemix2 = (1.0 + ix) * (1.0 - ix);
+	      double s = __ieee754_sqrt (onemix2);
+
+	      __real__ res = __log1p (2.0 * rx / s) / 2.0;
+	      if (adj)
+		__imag__ res = __ieee754_atan2 (s, __imag__ x);
+	      else
+		__imag__ res = __ieee754_atan2 (ix, s);
+	    }
+	  else
+	    {
+	      double onemix2 = (1.0 + ix) * (1.0 - ix);
+	      double rx2 = rx * rx;
+	      double f = rx2 * (2.0 + rx2 + 2.0 * ix * ix);
+	      double d = __ieee754_sqrt (onemix2 * onemix2 + f);
+	      double dp = d + onemix2;
+	      double dm = f / dp;
+	      double r1 = __ieee754_sqrt ((dp + rx2) / 2.0);
+	      double r2 = rx * ix / r1;
+
+	      __real__ res
+		= __log1p (rx2 + dm + 2.0 * (rx * r1 + ix * r2)) / 2.0;
+	      if (adj)
+		__imag__ res = __ieee754_atan2 (rx + r1,
+						__copysign (ix + r2,
+							    __imag__ x));
+	      else
+		__imag__ res = __ieee754_atan2 (ix + r2, rx + r1);
+	    }
+	}
+      else
+	{
+	  double s = __ieee754_hypot (1.0, rx);
+
+	  __real__ res = __log1p (2.0 * rx * (rx + s)) / 2.0;
+	  if (adj)
+	    __imag__ res = __ieee754_atan2 (s, __imag__ x);
+	  else
+	    __imag__ res = __ieee754_atan2 (ix, s);
+	}
+      if (__real__ res < DBL_MIN)
+	{
+	  volatile double force_underflow = __real__ res * __real__ res;
+	  (void) force_underflow;
+	}
+    }
   else
     {
       __real__ y = (rx - ix) * (rx + ix) + 1.0;
diff --git a/math/k_casinhf.c b/math/k_casinhf.c
index b368313390..56565e25e2 100644
--- a/math/k_casinhf.c
+++ b/math/k_casinhf.c
@@ -136,6 +136,58 @@ __kernel_casinhf (__complex__ float x, int adj)
 	    __imag__ res = __ieee754_atan2f (1.0f + s2, rx + s1);
 	}
     }
+  else if (ix < 1.0f && rx < 0.5f)
+    {
+      if (ix >= FLT_EPSILON)
+	{
+	  if (rx < FLT_EPSILON * FLT_EPSILON)
+	    {
+	      float onemix2 = (1.0f + ix) * (1.0f - ix);
+	      float s = __ieee754_sqrtf (onemix2);
+
+	      __real__ res = __log1pf (2.0f * rx / s) / 2.0f;
+	      if (adj)
+		__imag__ res = __ieee754_atan2f (s, __imag__ x);
+	      else
+		__imag__ res = __ieee754_atan2f (ix, s);
+	    }
+	  else
+	    {
+	      float onemix2 = (1.0f + ix) * (1.0f - ix);
+	      float rx2 = rx * rx;
+	      float f = rx2 * (2.0f + rx2 + 2.0f * ix * ix);
+	      float d = __ieee754_sqrtf (onemix2 * onemix2 + f);
+	      float dp = d + onemix2;
+	      float dm = f / dp;
+	      float r1 = __ieee754_sqrtf ((dp + rx2) / 2.0f);
+	      float r2 = rx * ix / r1;
+
+	      __real__ res
+		= __log1pf (rx2 + dm + 2.0f * (rx * r1 + ix * r2)) / 2.0f;
+	      if (adj)
+		__imag__ res = __ieee754_atan2f (rx + r1,
+						 __copysignf (ix + r2,
+							      __imag__ x));
+	      else
+		__imag__ res = __ieee754_atan2f (ix + r2, rx + r1);
+	    }
+	}
+      else
+	{
+	  float s = __ieee754_hypotf (1.0f, rx);
+
+	  __real__ res = __log1pf (2.0f * rx * (rx + s)) / 2.0f;
+	  if (adj)
+	    __imag__ res = __ieee754_atan2f (s, __imag__ x);
+	  else
+	    __imag__ res = __ieee754_atan2f (ix, s);
+	}
+      if (__real__ res < FLT_MIN)
+	{
+	  volatile float force_underflow = __real__ res * __real__ res;
+	  (void) force_underflow;
+	}
+    }
   else
     {
       __real__ y = (rx - ix) * (rx + ix) + 1.0f;
diff --git a/math/k_casinhl.c b/math/k_casinhl.c
index 8e5bbd4385..b5f94006f7 100644
--- a/math/k_casinhl.c
+++ b/math/k_casinhl.c
@@ -143,6 +143,58 @@ __kernel_casinhl (__complex__ long double x, int adj)
 	    __imag__ res = __ieee754_atan2l (1.0L + s2, rx + s1);
 	}
     }
+  else if (ix < 1.0L && rx < 0.5L)
+    {
+      if (ix >= LDBL_EPSILON)
+	{
+	  if (rx < LDBL_EPSILON * LDBL_EPSILON)
+	    {
+	      long double onemix2 = (1.0L + ix) * (1.0L - ix);
+	      long double s = __ieee754_sqrtl (onemix2);
+
+	      __real__ res = __log1pl (2.0L * rx / s) / 2.0L;
+	      if (adj)
+		__imag__ res = __ieee754_atan2l (s, __imag__ x);
+	      else
+		__imag__ res = __ieee754_atan2l (ix, s);
+	    }
+	  else
+	    {
+	      long double onemix2 = (1.0L + ix) * (1.0L - ix);
+	      long double rx2 = rx * rx;
+	      long double f = rx2 * (2.0L + rx2 + 2.0L * ix * ix);
+	      long double d = __ieee754_sqrtl (onemix2 * onemix2 + f);
+	      long double dp = d + onemix2;
+	      long double dm = f / dp;
+	      long double r1 = __ieee754_sqrtl ((dp + rx2) / 2.0L);
+	      long double r2 = rx * ix / r1;
+
+	      __real__ res
+		= __log1pl (rx2 + dm + 2.0L * (rx * r1 + ix * r2)) / 2.0L;
+	      if (adj)
+		__imag__ res = __ieee754_atan2l (rx + r1,
+						 __copysignl (ix + r2,
+							      __imag__ x));
+	      else
+		__imag__ res = __ieee754_atan2l (ix + r2, rx + r1);
+	    }
+	}
+      else
+	{
+	  long double s = __ieee754_hypotl (1.0L, rx);
+
+	  __real__ res = __log1pl (2.0L * rx * (rx + s)) / 2.0L;
+	  if (adj)
+	    __imag__ res = __ieee754_atan2l (s, __imag__ x);
+	  else
+	    __imag__ res = __ieee754_atan2l (ix, s);
+	}
+      if (__real__ res < LDBL_MIN)
+	{
+	  volatile long double force_underflow = __real__ res * __real__ res;
+	  (void) force_underflow;
+	}
+    }
   else
     {
       __real__ y = (rx - ix) * (rx + ix) + 1.0L;
diff --git a/math/libm-test.inc b/math/libm-test.inc
index 0ea456bb94..3c5e58f39f 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -178,8 +178,10 @@
 #if defined TEST_FLOAT || defined TEST_DOUBLE \
   || (defined TEST_LDOUBLE && LDBL_MIN_EXP >= DBL_MIN_EXP)
 # define UNDERFLOW_EXCEPTION_DOUBLE	UNDERFLOW_EXCEPTION
+# define UNDERFLOW_EXCEPTION_OK_DOUBLE	UNDERFLOW_EXCEPTION_OK
 #else
 # define UNDERFLOW_EXCEPTION_DOUBLE	0
+# define UNDERFLOW_EXCEPTION_OK_DOUBLE	0
 #endif
 /* Values underflowing only for IBM long double or types with a larger least
    positive normal value.  */
@@ -1736,6 +1738,329 @@ cacos_test (void)
   TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0.0L, 3.141592653589793238462643383279502884197L, 1.962615573354718824241727964954454332780e-17L)
 #endif
 
+  TEST_c_c (cacos, 0x1p-23L, 0x0.ffffffp0L, 1.570796242501197085295336701632142060969L, -8.813735448726963984495965873956465777250e-1L);
+  TEST_c_c (cacos, 0x1p-23L, -0x0.ffffffp0L, 1.570796242501197085295336701632142060969L, 8.813735448726963984495965873956465777250e-1L);
+  TEST_c_c (cacos, -0x1p-23L, 0x0.ffffffp0L, 1.570796411088596153167306681647360823228L, -8.813735448726963984495965873956465777250e-1L);
+  TEST_c_c (cacos, -0x1p-23L, -0x0.ffffffp0L, 1.570796411088596153167306681647360823228L, 8.813735448726963984495965873956465777250e-1L);
+  TEST_c_c (cacos, 0x0.ffffffp0L, 0x1p-23L, 4.391863861910487109445187743978204002614e-4L, -2.714321200917194650737217746780928423385e-4L);
+  TEST_c_c (cacos, -0x0.ffffffp0L, 0x1p-23L, 3.141153467203602189751698864505105063797L, -2.714321200917194650737217746780928423385e-4L);
+  TEST_c_c (cacos, 0x0.ffffffp0L, -0x1p-23L, 4.391863861910487109445187743978204002614e-4L, 2.714321200917194650737217746780928423385e-4L);
+  TEST_c_c (cacos, -0x0.ffffffp0L, -0x1p-23L, 3.141153467203602189751698864505105063797L, 2.714321200917194650737217746780928423385e-4L);
+  TEST_c_c (cacos, 0x1.fp-129L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442097L, -8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (cacos, 0x1.fp-129L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442097L, 8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (cacos, -0x1.fp-129L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442101L, -8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (cacos, -0x1.fp-129L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442101L, 8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (cacos, 0x0.ffffffp0L, 0x1.fp-129L, 3.452669847162035876032494826387364972849e-4L, -8.245504387859737323891843603996428534945e-36L);
+  TEST_c_c (cacos, -0x0.ffffffp0L, 0x1.fp-129L, 3.141247386605077034875040133796864147700L, -8.245504387859737323891843603996428534945e-36L);
+  TEST_c_c (cacos, 0x0.ffffffp0L, -0x1.fp-129L, 3.452669847162035876032494826387364972849e-4L, 8.245504387859737323891843603996428534945e-36L);
+  TEST_c_c (cacos, -0x0.ffffffp0L, -0x1.fp-129L, 3.141247386605077034875040133796864147700L, 8.245504387859737323891843603996428534945e-36L);
+  TEST_c_c (cacos, 0.0L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (cacos, 0.0L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (cacos, -0.0L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (cacos, -0.0L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (cacos, 0x0.ffffffp0L, 0.0L, 3.452669847162035876032494826387364972849e-4L, -0.0L);
+  TEST_c_c (cacos, -0x0.ffffffp0L, 0.0L, 3.141247386605077034875040133796864147700L, -0.0L);
+  TEST_c_c (cacos, 0x0.ffffffp0L, -0.0L, 3.452669847162035876032494826387364972849e-4L, 0.0L);
+  TEST_c_c (cacos, -0x0.ffffffp0L, -0.0L, 3.141247386605077034875040133796864147700L, 0.0L);
+  TEST_c_c (cacos, 0x1p-23L, 0.5L, 1.570796220170866625230343643673321150378L, -4.812118250596059896127318386463676808798e-1L);
+  TEST_c_c (cacos, 0x1p-23L, -0.5L, 1.570796220170866625230343643673321150378L, 4.812118250596059896127318386463676808798e-1L);
+  TEST_c_c (cacos, -0x1p-23L, 0.5L, 1.570796433418926613232299739606181733819L, -4.812118250596059896127318386463676808798e-1L);
+  TEST_c_c (cacos, -0x1p-23L, -0.5L, 1.570796433418926613232299739606181733819L, 4.812118250596059896127318386463676808798e-1L);
+  TEST_c_c (cacos, 0.5L, 0x1p-23L, 1.047197551196603215914744618665204532273L, -1.376510308240943236356088341381173571841e-7L);
+  TEST_c_c (cacos, -0.5L, 0x1p-23L, 2.094395102393190022547898764614298351924L, -1.376510308240943236356088341381173571841e-7L);
+  TEST_c_c (cacos, 0.5L, -0x1p-23L, 1.047197551196603215914744618665204532273L, 1.376510308240943236356088341381173571841e-7L);
+  TEST_c_c (cacos, -0.5L, -0x1p-23L, 2.094395102393190022547898764614298351924L, 1.376510308240943236356088341381173571841e-7L);
+  TEST_c_c (cacos, 0x1.fp-129L, 0.5L, 1.570796326794896619231321691639751442096L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0x1.fp-129L, -0.5L, 1.570796326794896619231321691639751442096L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1.fp-129L, 0.5L, 1.570796326794896619231321691639751442101L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1.fp-129L, -0.5L, 1.570796326794896619231321691639751442101L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0.5L, 0x1.fp-129L, 1.047197551196597746154214461093167628066L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, -0.5L, 0x1.fp-129L, 2.094395102393195492308428922186335256131L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, 0.5L, -0x1.fp-129L, 1.047197551196597746154214461093167628066L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, -0.5L, -0x1.fp-129L, 2.094395102393195492308428922186335256131L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, 0x1p-23L, 0x1p-23L, 1.570796207585607068450636380271254316214L, -1.192092895507818146886315028596704749235e-7L);
+  TEST_c_c (cacos, 0x1p-23L, -0x1p-23L, 1.570796207585607068450636380271254316214L, 1.192092895507818146886315028596704749235e-7L);
+  TEST_c_c (cacos, -0x1p-23L, 0x1p-23L, 1.570796446004186170012007003008248567984L, -1.192092895507818146886315028596704749235e-7L);
+  TEST_c_c (cacos, -0x1p-23L, -0x1p-23L, 1.570796446004186170012007003008248567984L, 1.192092895507818146886315028596704749235e-7L);
+  TEST_c_c (cacos, 0x1.fp-129L, 0x1p-23L, 1.570796326794896619231321691639751442096L, -1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (cacos, 0x1.fp-129L, -0x1p-23L, 1.570796326794896619231321691639751442096L, 1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (cacos, -0x1.fp-129L, 0x1p-23L, 1.570796326794896619231321691639751442101L, -1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (cacos, -0x1.fp-129L, -0x1p-23L, 1.570796326794896619231321691639751442101L, 1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (cacos, 0x1p-23L, 0x1.fp-129L, 1.570796207585607068449789347324000006847L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, -0x1p-23L, 0x1.fp-129L, 1.570796446004186170012854035955502877351L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, 0x1p-23L, -0x1.fp-129L, 1.570796207585607068449789347324000006847L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, -0x1p-23L, -0x1.fp-129L, 1.570796446004186170012854035955502877351L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, 0.0L, 0x1p-23L, 1.570796326794896619231321691639751442099L, -1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (cacos, 0.0L, -0x1p-23L, 1.570796326794896619231321691639751442099L, 1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (cacos, -0.0L, 0x1p-23L, 1.570796326794896619231321691639751442099L, -1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (cacos, -0.0L, -0x1p-23L, 1.570796326794896619231321691639751442099L, 1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (cacos, 0x1p-23L, 0.0L, 1.570796207585607068449789347324000006847L, -0.0L);
+  TEST_c_c (cacos, -0x1p-23L, 0.0L, 1.570796446004186170012854035955502877351L, -0.0L);
+  TEST_c_c (cacos, 0x1p-23L, -0.0L, 1.570796207585607068449789347324000006847L, 0.0L);
+  TEST_c_c (cacos, -0x1p-23L, -0.0L, 1.570796446004186170012854035955502877351L, 0.0L);
+  TEST_c_c (cacos, 0x1.fp-129L, 0x1.fp-129L, 1.570796326794896619231321691639751442096L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, 0x1.fp-129L, -0x1.fp-129L, 1.570796326794896619231321691639751442096L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, -0x1.fp-129L, 0x1.fp-129L, 1.570796326794896619231321691639751442101L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (cacos, -0x1.fp-129L, -0x1.fp-129L, 1.570796326794896619231321691639751442101L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+#ifndef TEST_FLOAT
+  TEST_c_c (cacos, 0x1p-52L, 0x0.fffffffffffff8p0L, 1.570796326794896462222075823262236786996L, -8.813735870195429467279863907910458761820e-1L);
+  TEST_c_c (cacos, 0x1p-52L, -0x0.fffffffffffff8p0L, 1.570796326794896462222075823262236786996L, 8.813735870195429467279863907910458761820e-1L);
+  TEST_c_c (cacos, -0x1p-52L, 0x0.fffffffffffff8p0L, 1.570796326794896776240567560017266097201L, -8.813735870195429467279863907910458761820e-1L);
+  TEST_c_c (cacos, -0x1p-52L, -0x0.fffffffffffff8p0L, 1.570796326794896776240567560017266097201L, 8.813735870195429467279863907910458761820e-1L);
+  TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0x1p-52L, 1.895456983915074112227925127005564372844e-8L, -1.171456840272878582596796205397918831268e-8L);
+  TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0x1p-52L, 3.141592634635223399311902261000251614142L, -1.171456840272878582596796205397918831268e-8L);
+  TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0x1p-52L, 1.895456983915074112227925127005564372844e-8L, 1.171456840272878582596796205397918831268e-8L);
+  TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0x1p-52L, 3.141592634635223399311902261000251614142L, 1.171456840272878582596796205397918831268e-8L);
+  TEST_c_c (cacos, 0x1.fp-1025L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (cacos, 0x1.fp-1025L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (cacos, -0x1.fp-1025L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (cacos, -0x1.fp-1025L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0x1.fp-1025L, 1.490116119384765638786343542550461592240e-8L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0x1.fp-1025L, 3.141592638688632044614986995416067458693L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0x1.fp-1025L, 1.490116119384765638786343542550461592240e-8L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0x1.fp-1025L, 3.141592638688632044614986995416067458693L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (cacos, 0.0L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (cacos, 0.0L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (cacos, -0.0L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (cacos, -0.0L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0.0L, 1.490116119384765638786343542550461592240e-8L, -0.0L);
+  TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0.0L, 3.141592638688632044614986995416067458693L, -0.0L);
+  TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0.0L, 1.490116119384765638786343542550461592240e-8L, 0.0L);
+  TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0.0L, 3.141592638688632044614986995416067458693L, 0.0L);
+#endif
+  TEST_c_c (cacos, 0x1p-52L, 0.5L, 1.570796326794896420628589431857911675917L, -4.812118250596034474977589134243772428682e-1L);
+  TEST_c_c (cacos, 0x1p-52L, -0.5L, 1.570796326794896420628589431857911675917L, 4.812118250596034474977589134243772428682e-1L);
+  TEST_c_c (cacos, -0x1p-52L, 0.5L, 1.570796326794896817834053951421591208280L, -4.812118250596034474977589134243772428682e-1L);
+  TEST_c_c (cacos, -0x1p-52L, -0.5L, 1.570796326794896817834053951421591208280L, 4.812118250596034474977589134243772428682e-1L);
+  TEST_c_c (cacos, 0.5L, 0x1p-52L, 1.047197551196597746154214461093186605110L, -2.563950248511418570403591756798643804971e-16L);
+  TEST_c_c (cacos, -0.5L, 0x1p-52L, 2.094395102393195492308428922186316279087L, -2.563950248511418570403591756798643804971e-16L);
+  TEST_c_c (cacos, 0.5L, -0x1p-52L, 1.047197551196597746154214461093186605110L, 2.563950248511418570403591756798643804971e-16L);
+  TEST_c_c (cacos, -0.5L, -0x1p-52L, 2.094395102393195492308428922186316279087L, 2.563950248511418570403591756798643804971e-16L);
+#ifndef TEST_FLOAT
+  TEST_c_c (cacos, 0x1.fp-1025L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0x1.fp-1025L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1.fp-1025L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1.fp-1025L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0.5L, 0x1.fp-1025L, 1.047197551196597746154214461093167628066L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, -0.5L, 0x1.fp-1025L, 2.094395102393195492308428922186335256131L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, 0.5L, -0x1.fp-1025L, 1.047197551196597746154214461093167628066L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, -0.5L, -0x1.fp-1025L, 2.094395102393195492308428922186335256131L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+  TEST_c_c (cacos, 0x1p-52L, 0x1p-52L, 1.570796326794896397186716766608443357372L, -2.220446049250313080847263336181677117148e-16L);
+  TEST_c_c (cacos, 0x1p-52L, -0x1p-52L, 1.570796326794896397186716766608443357372L, 2.220446049250313080847263336181677117148e-16L);
+  TEST_c_c (cacos, -0x1p-52L, 0x1p-52L, 1.570796326794896841275926616671059526825L, -2.220446049250313080847263336181677117148e-16L);
+  TEST_c_c (cacos, -0x1p-52L, -0x1p-52L, 1.570796326794896841275926616671059526825L, 2.220446049250313080847263336181677117148e-16L);
+#ifndef TEST_FLOAT
+  TEST_c_c (cacos, 0x1.fp-1025L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (cacos, 0x1.fp-1025L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (cacos, -0x1.fp-1025L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (cacos, -0x1.fp-1025L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (cacos, 0x1p-52L, 0x1.fp-1025L, 1.570796326794896397186716766608443357372L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, -0x1p-52L, 0x1.fp-1025L, 1.570796326794896841275926616671059526825L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, 0x1p-52L, -0x1.fp-1025L, 1.570796326794896397186716766608443357372L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, -0x1p-52L, -0x1.fp-1025L, 1.570796326794896841275926616671059526825L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+  TEST_c_c (cacos, 0.0L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (cacos, 0.0L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (cacos, -0.0L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (cacos, -0.0L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (cacos, 0x1p-52L, 0.0L, 1.570796326794896397186716766608443357372L, -0.0L);
+  TEST_c_c (cacos, -0x1p-52L, 0.0L, 1.570796326794896841275926616671059526825L, -0.0L);
+  TEST_c_c (cacos, 0x1p-52L, -0.0L, 1.570796326794896397186716766608443357372L, 0.0L);
+  TEST_c_c (cacos, -0x1p-52L, -0.0L, 1.570796326794896841275926616671059526825L, 0.0L);
+#ifndef TEST_FLOAT
+  TEST_c_c (cacos, 0x1.fp-1025L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, 0x1.fp-1025L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, -0x1.fp-1025L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, -0x1.fp-1025L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+  TEST_c_c (cacos, 0x1p-63L, 0x0.ffffffffffffffffp0L, 1.570796326794896619154657020805582738025L, -8.813735870195430251942769895627079569937e-1L);
+  TEST_c_c (cacos, 0x1p-63L, -0x0.ffffffffffffffffp0L, 1.570796326794896619154657020805582738025L, 8.813735870195430251942769895627079569937e-1L);
+  TEST_c_c (cacos, -0x1p-63L, 0x0.ffffffffffffffffp0L, 1.570796326794896619307986362473920146173L, -8.813735870195430251942769895627079569937e-1L);
+  TEST_c_c (cacos, -0x1p-63L, -0x0.ffffffffffffffffp0L, 1.570796326794896619307986362473920146173L, 8.813735870195430251942769895627079569937e-1L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0x1p-63L, 4.188407771167967636741951941902992986043e-10L, -2.588578361325995866221775673638805081337e-10L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0x1p-63L, 3.141592653170952461345846619605307690007L, -2.588578361325995866221775673638805081337e-10L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0x1p-63L, 4.188407771167967636741951941902992986043e-10L, 2.588578361325995866221775673638805081337e-10L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0x1p-63L, 3.141592653170952461345846619605307690007L, 2.588578361325995866221775673638805081337e-10L);
+# if LDBL_MIN_EXP <= -16381
+  TEST_c_c (cacos, 0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (cacos, 0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (cacos, -0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (cacos, -0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 3.292722539913596233371825532007990724506e-10L, -2.472906068161537187835415298076415423459e-4923L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 3.141592653260520984471283759942320330996L, -2.472906068161537187835415298076415423459e-4923L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0x1.fp-16385L, 3.292722539913596233371825532007990724506e-10L, 2.472906068161537187835415298076415423459e-4923L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0x1.fp-16385L, 3.141592653260520984471283759942320330996L, 2.472906068161537187835415298076415423459e-4923L);
+# endif
+  TEST_c_c (cacos, 0.0L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (cacos, 0.0L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (cacos, -0.0L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (cacos, -0.0L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0.0L, 3.292722539913596233371825532007990724506e-10L, -0.0L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0.0L, 3.141592653260520984471283759942320330996L, -0.0L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0.0L, 3.292722539913596233371825532007990724506e-10L, 0.0L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0.0L, 3.141592653260520984471283759942320330996L, 0.0L);
+#endif
+  TEST_c_c (cacos, 0x1p-63L, 0.5L, 1.570796326794896619134347701278529840650L, -4.812118250596034474977589134243684231373e-1L);
+  TEST_c_c (cacos, 0x1p-63L, -0.5L, 1.570796326794896619134347701278529840650L, 4.812118250596034474977589134243684231373e-1L);
+  TEST_c_c (cacos, -0x1p-63L, 0.5L, 1.570796326794896619328295682000973043547L, -4.812118250596034474977589134243684231373e-1L);
+  TEST_c_c (cacos, -0x1p-63L, -0.5L, 1.570796326794896619328295682000973043547L, 4.812118250596034474977589134243684231373e-1L);
+  TEST_c_c (cacos, 0.5L, 0x1p-63L, 1.047197551196597746154214461093167628070L, -1.251928832280966098829878787499365228659e-19L);
+  TEST_c_c (cacos, -0.5L, 0x1p-63L, 2.094395102393195492308428922186335256127L, -1.251928832280966098829878787499365228659e-19L);
+  TEST_c_c (cacos, 0.5L, -0x1p-63L, 1.047197551196597746154214461093167628070L, 1.251928832280966098829878787499365228659e-19L);
+  TEST_c_c (cacos, -0.5L, -0x1p-63L, 2.094395102393195492308428922186335256127L, 1.251928832280966098829878787499365228659e-19L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (cacos, 0x1.fp-16385L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0x1.fp-16385L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1.fp-16385L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1.fp-16385L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0.5L, 0x1.fp-16385L, 1.047197551196597746154214461093167628066L, -9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, -0.5L, 0x1.fp-16385L, 2.094395102393195492308428922186335256131L, -9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, 0.5L, -0x1.fp-16385L, 1.047197551196597746154214461093167628066L, 9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, -0.5L, -0x1.fp-16385L, 2.094395102393195492308428922186335256131L, 9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+  TEST_c_c (cacos, 0x1p-63L, 0x1p-63L, 1.570796326794896619122901474391200998698L, -1.084202172485504434007452800869941711430e-19L);
+  TEST_c_c (cacos, 0x1p-63L, -0x1p-63L, 1.570796326794896619122901474391200998698L, 1.084202172485504434007452800869941711430e-19L);
+  TEST_c_c (cacos, -0x1p-63L, 0x1p-63L, 1.570796326794896619339741908888301885499L, -1.084202172485504434007452800869941711430e-19L);
+  TEST_c_c (cacos, -0x1p-63L, -0x1p-63L, 1.570796326794896619339741908888301885499L, 1.084202172485504434007452800869941711430e-19L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (cacos, 0x1.fp-16385L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (cacos, 0x1.fp-16385L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (cacos, -0x1.fp-16385L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (cacos, -0x1.fp-16385L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (cacos, 0x1p-63L, 0x1.fp-16385L, 1.570796326794896619122901474391200998698L, -8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, -0x1p-63L, 0x1.fp-16385L, 1.570796326794896619339741908888301885499L, -8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, 0x1p-63L, -0x1.fp-16385L, 1.570796326794896619122901474391200998698L, 8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, -0x1p-63L, -0x1.fp-16385L, 1.570796326794896619339741908888301885499L, 8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+  TEST_c_c (cacos, 0.0L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (cacos, 0.0L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (cacos, -0.0L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (cacos, -0.0L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (cacos, 0x1p-63L, 0.0L, 1.570796326794896619122901474391200998698L, -0.0L);
+  TEST_c_c (cacos, -0x1p-63L, 0.0L, 1.570796326794896619339741908888301885499L, -0.0L);
+  TEST_c_c (cacos, 0x1p-63L, -0.0L, 1.570796326794896619122901474391200998698L, 0.0L);
+  TEST_c_c (cacos, -0x1p-63L, -0.0L, 1.570796326794896619339741908888301885499L, 0.0L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (cacos, 0x1.fp-16385L, 0x1.fp-16385L, 1.570796326794896619231321691639751442099L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, 0x1.fp-16385L, -0x1.fp-16385L, 1.570796326794896619231321691639751442099L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, -0x1.fp-16385L, 0x1.fp-16385L, 1.570796326794896619231321691639751442099L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, -0x1.fp-16385L, -0x1.fp-16385L, 1.570796326794896619231321691639751442099L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 106
+  TEST_c_c (cacos, 0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639734010571L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, 0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639734010571L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, -0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639768873627L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, -0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639768873627L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, 1.997188458999618357060632049675702684031e-16L, -1.234330349600789959989661887846005659983e-16L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, 3.141592653589793038743797483317667178134L, -1.234330349600789959989661887846005659983e-16L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, 1.997188458999618357060632049675702684031e-16L, 1.234330349600789959989661887846005659983e-16L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, 3.141592653589793038743797483317667178134L, 1.234330349600789959989661887846005659983e-16L);
+  TEST_c_c (cacos, 0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, 0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, -0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, -0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, 1.570092458683775059393382371963565104164e-16L, -3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, 3.141592653589793081453397514901996944859L, -3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, 1.570092458683775059393382371963565104164e-16L, 3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, 3.141592653589793081453397514901996944859L, 3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (cacos, 0.0L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, 0.0L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, -0.0L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, -0.0L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 1.570092458683775059393382371963565104164e-16L, -0.0L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 3.141592653589793081453397514901996944859L, -0.0L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 1.570092458683775059393382371963565104164e-16L, 0.0L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 3.141592653589793081453397514901996944859L, 0.0L);
+#endif
+  TEST_c_c (cacos, 0x1p-105L, 0.5L, 1.570796326794896619231321691639729392766L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0x1p-105L, -0.5L, 1.570796326794896619231321691639729392766L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1p-105L, 0.5L, 1.570796326794896619231321691639773491431L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1p-105L, -0.5L, 1.570796326794896619231321691639773491431L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0.5L, 0x1p-105L, 1.047197551196597746154214461093167628066L, -2.846556599890768890940941645338546615370e-32L);
+  TEST_c_c (cacos, -0.5L, 0x1p-105L, 2.094395102393195492308428922186335256131L, -2.846556599890768890940941645338546615370e-32L);
+  TEST_c_c (cacos, 0.5L, -0x1p-105L, 1.047197551196597746154214461093167628066L, 2.846556599890768890940941645338546615370e-32L);
+  TEST_c_c (cacos, -0.5L, -0x1p-105L, 2.094395102393195492308428922186335256131L, 2.846556599890768890940941645338546615370e-32L);
+  TEST_c_c (cacos, 0x1p-105L, 0x1p-105L, 1.570796326794896619231321691639726790195L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, 0x1p-105L, -0x1p-105L, 1.570796326794896619231321691639726790195L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, -0x1p-105L, 0x1p-105L, 1.570796326794896619231321691639776094002L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, -0x1p-105L, -0x1p-105L, 1.570796326794896619231321691639776094002L, 2.465190328815661891911651766508706967729e-32L);
+#ifndef TEST_FLOAT
+  TEST_c_c (cacos, 0x1.fp-1025L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, 0x1.fp-1025L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, -0x1.fp-1025L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, -0x1.fp-1025L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, 0x1p-105L, 0x1.fp-1025L, 1.570796326794896619231321691639726790195L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, -0x1p-105L, 0x1.fp-1025L, 1.570796326794896619231321691639776094002L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, 0x1p-105L, -0x1.fp-1025L, 1.570796326794896619231321691639726790195L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (cacos, -0x1p-105L, -0x1.fp-1025L, 1.570796326794896619231321691639776094002L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+  TEST_c_c (cacos, 0.0L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, 0.0L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, -0.0L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, -0.0L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (cacos, 0x1p-105L, 0.0L, 1.570796326794896619231321691639726790195L, -0.0L);
+  TEST_c_c (cacos, -0x1p-105L, 0.0L, 1.570796326794896619231321691639776094002L, -0.0L);
+  TEST_c_c (cacos, 0x1p-105L, -0.0L, 1.570796326794896619231321691639726790195L, 0.0L);
+  TEST_c_c (cacos, -0x1p-105L, -0.0L, 1.570796326794896619231321691639776094002L, 0.0L);
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 113
+  TEST_c_c (cacos, 0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751305915L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, 0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751305915L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, -0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751578282L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, -0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751578282L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, 1.765281878332676474347460257221369818872e-17L, -1.091004200533850618345330909857103457781e-17L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, 3.141592653589793220809824599952738140723L, -1.091004200533850618345330909857103457781e-17L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, 1.765281878332676474347460257221369818872e-17L, 1.091004200533850618345330909857103457781e-17L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, 3.141592653589793220809824599952738140723L, 1.091004200533850618345330909857103457781e-17L);
+  TEST_c_c (cacos, 0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, 0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, -0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, -0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, 1.387778780781445675529539585113525401762e-17L, -5.867357004219059108790368268900490184505e-4916L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, 3.141592653589793224584855575465046128902L, -5.867357004219059108790368268900490184505e-4916L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, 1.387778780781445675529539585113525401762e-17L, 5.867357004219059108790368268900490184505e-4916L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, 3.141592653589793224584855575465046128902L, 5.867357004219059108790368268900490184505e-4916L);
+  TEST_c_c (cacos, 0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, 0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, -0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, -0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 1.387778780781445675529539585113525401762e-17L, -0.0L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 3.141592653589793224584855575465046128902L, -0.0L);
+  TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 1.387778780781445675529539585113525401762e-17L, 0.0L);
+  TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 3.141592653589793224584855575465046128902L, 0.0L);
+#endif
+  TEST_c_c (cacos, 0x1p-112L, 0.5L, 1.570796326794896619231321691639751269838L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0x1p-112L, -0.5L, 1.570796326794896619231321691639751269838L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1p-112L, 0.5L, 1.570796326794896619231321691639751614359L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, -0x1p-112L, -0.5L, 1.570796326794896619231321691639751614359L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (cacos, 0.5L, 0x1p-112L, 1.047197551196597746154214461093167628066L, -2.223872343664663196047610660420739543258e-34L);
+  TEST_c_c (cacos, -0.5L, 0x1p-112L, 2.094395102393195492308428922186335256131L, -2.223872343664663196047610660420739543258e-34L);
+  TEST_c_c (cacos, 0.5L, -0x1p-112L, 1.047197551196597746154214461093167628066L, 2.223872343664663196047610660420739543258e-34L);
+  TEST_c_c (cacos, -0.5L, -0x1p-112L, 2.094395102393195492308428922186335256131L, 2.223872343664663196047610660420739543258e-34L);
+  TEST_c_c (cacos, 0x1p-112L, 0x1p-112L, 1.570796326794896619231321691639751249506L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, 0x1p-112L, -0x1p-112L, 1.570796326794896619231321691639751249506L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, -0x1p-112L, 0x1p-112L, 1.570796326794896619231321691639751634692L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, -0x1p-112L, -0x1p-112L, 1.570796326794896619231321691639751634692L, 1.925929944387235853055977942584927318538e-34L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (cacos, 0x1.fp-16385L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, 0x1.fp-16385L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, -0x1.fp-16385L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, -0x1.fp-16385L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, 0x1p-112L, 0x1.fp-16385L, 1.570796326794896619231321691639751249506L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, -0x1p-112L, 0x1.fp-16385L, 1.570796326794896619231321691639751634692L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, 0x1p-112L, -0x1.fp-16385L, 1.570796326794896619231321691639751249506L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (cacos, -0x1p-112L, -0x1.fp-16385L, 1.570796326794896619231321691639751634692L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+  TEST_c_c (cacos, 0.0L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, 0.0L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, -0.0L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, -0.0L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (cacos, 0x1p-112L, 0.0L, 1.570796326794896619231321691639751249506L, -0.0L);
+  TEST_c_c (cacos, -0x1p-112L, 0.0L, 1.570796326794896619231321691639751634692L, -0.0L);
+  TEST_c_c (cacos, 0x1p-112L, -0.0L, 1.570796326794896619231321691639751249506L, 0.0L);
+  TEST_c_c (cacos, -0x1p-112L, -0.0L, 1.570796326794896619231321691639751634692L, 0.0L);
+
   TEST_c_c (cacos, 0.75L, 1.25L, 1.11752014915610270578240049553777969L, -1.13239363160530819522266333696834467L);
   TEST_c_c (cacos, -2, -3, 2.1414491111159960199416055713254211L, 1.9833870299165354323470769028940395L);
 
@@ -2263,6 +2588,332 @@ casin_test (void)
   TEST_c_c (casin, -0x1.0000000000000000000000000001p0L, -0.0L, -1.570796326794896619231321691639751442099L, -1.962615573354718824241727964954454332780e-17L)
 #endif
 
+  TEST_c_c (casin, 0x1p-23L, 0x0.ffffffp0L, 8.429369953393598499000760938112968755257e-8L, 8.813735448726963984495965873956465777250e-1L);
+  TEST_c_c (casin, 0x1p-23L, -0x0.ffffffp0L, 8.429369953393598499000760938112968755257e-8L, -8.813735448726963984495965873956465777250e-1L);
+  TEST_c_c (casin, -0x1p-23L, 0x0.ffffffp0L, -8.429369953393598499000760938112968755257e-8L, 8.813735448726963984495965873956465777250e-1L);
+  TEST_c_c (casin, -0x1p-23L, -0x0.ffffffp0L, -8.429369953393598499000760938112968755257e-8L, -8.813735448726963984495965873956465777250e-1L);
+  TEST_c_c (casin, 0x0.ffffffp0L, 0x1p-23L, 1.570357140408705570520377172865353621698L, 2.714321200917194650737217746780928423385e-4L);
+  TEST_c_c (casin, -0x0.ffffffp0L, 0x1p-23L, -1.570357140408705570520377172865353621698L, 2.714321200917194650737217746780928423385e-4L);
+  TEST_c_c (casin, 0x0.ffffffp0L, -0x1p-23L, 1.570357140408705570520377172865353621698L, -2.714321200917194650737217746780928423385e-4L);
+  TEST_c_c (casin, -0x0.ffffffp0L, -0x1p-23L, -1.570357140408705570520377172865353621698L, -2.714321200917194650737217746780928423385e-4L);
+  TEST_c_c (casin, 0x1.fp-129L, 0x0.ffffffp0L, 2.013062624689288675911339929224634593425e-39L, 8.813735448726938863015878255140556727969e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, 0x1.fp-129L, -0x0.ffffffp0L, 2.013062624689288675911339929224634593425e-39L, -8.813735448726938863015878255140556727969e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0x1.fp-129L, 0x0.ffffffp0L, -2.013062624689288675911339929224634593425e-39L, 8.813735448726938863015878255140556727969e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0x1.fp-129L, -0x0.ffffffp0L, -2.013062624689288675911339929224634593425e-39L, -8.813735448726938863015878255140556727969e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, 0x0.ffffffp0L, 0x1.fp-129L, 1.570451059810180415643718442157112705601L, 8.245504387859737323891843603996428534945e-36L);
+  TEST_c_c (casin, -0x0.ffffffp0L, 0x1.fp-129L, -1.570451059810180415643718442157112705601L, 8.245504387859737323891843603996428534945e-36L);
+  TEST_c_c (casin, 0x0.ffffffp0L, -0x1.fp-129L, 1.570451059810180415643718442157112705601L, -8.245504387859737323891843603996428534945e-36L);
+  TEST_c_c (casin, -0x0.ffffffp0L, -0x1.fp-129L, -1.570451059810180415643718442157112705601L, -8.245504387859737323891843603996428534945e-36L);
+  TEST_c_c (casin, 0.0L, 0x0.ffffffp0L, 0.0L, 8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (casin, 0.0L, -0x0.ffffffp0L, 0.0L, -8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (casin, -0.0L, 0x0.ffffffp0L, -0.0L, 8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (casin, -0.0L, -0x0.ffffffp0L, -0.0L, -8.813735448726938863015878255140556727969e-1L);
+  TEST_c_c (casin, 0x0.ffffffp0L, 0.0L, 1.570451059810180415643718442157112705601L, 0.0L);
+  TEST_c_c (casin, -0x0.ffffffp0L, 0.0L, -1.570451059810180415643718442157112705601L, 0.0L);
+  TEST_c_c (casin, 0x0.ffffffp0L, -0.0L, 1.570451059810180415643718442157112705601L, -0.0L);
+  TEST_c_c (casin, -0x0.ffffffp0L, -0.0L, -1.570451059810180415643718442157112705601L, -0.0L);
+  TEST_c_c (casin, 0x1p-23L, 0.5L, 1.066240299940009780479664302917201696886e-7L, 4.812118250596059896127318386463676808798e-1L);
+  TEST_c_c (casin, 0x1p-23L, -0.5L, 1.066240299940009780479664302917201696886e-7L, -4.812118250596059896127318386463676808798e-1L);
+  TEST_c_c (casin, -0x1p-23L, 0.5L, -1.066240299940009780479664302917201696886e-7L, 4.812118250596059896127318386463676808798e-1L);
+  TEST_c_c (casin, -0x1p-23L, -0.5L, -1.066240299940009780479664302917201696886e-7L, -4.812118250596059896127318386463676808798e-1L);
+  TEST_c_c (casin, 0.5L, 0x1p-23L, 5.235987755982934033165770729745469098254e-1L, 1.376510308240943236356088341381173571841e-7L);
+  TEST_c_c (casin, -0.5L, 0x1p-23L, -5.235987755982934033165770729745469098254e-1L, 1.376510308240943236356088341381173571841e-7L);
+  TEST_c_c (casin, 0.5L, -0x1p-23L, 5.235987755982934033165770729745469098254e-1L, -1.376510308240943236356088341381173571841e-7L);
+  TEST_c_c (casin, -0.5L, -0x1p-23L, -5.235987755982934033165770729745469098254e-1L, -1.376510308240943236356088341381173571841e-7L);
+  TEST_c_c (casin, 0x1.fp-129L, 0.5L, 2.546345110742945032959687790021055102355e-39L, 4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, 0x1.fp-129L, -0.5L, 2.546345110742945032959687790021055102355e-39L, -4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0x1.fp-129L, 0.5L, -2.546345110742945032959687790021055102355e-39L, 4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0x1.fp-129L, -0.5L, -2.546345110742945032959687790021055102355e-39L, -4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, 0.5L, 0x1.fp-129L, 5.235987755982988730771072305465838140329e-1L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0.5L, 0x1.fp-129L, -5.235987755982988730771072305465838140329e-1L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, 0.5L, -0x1.fp-129L, 5.235987755982988730771072305465838140329e-1L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0.5L, -0x1.fp-129L, -5.235987755982988730771072305465838140329e-1L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, 0x1p-23L, 0x1p-23L, 1.192092895507806853113684971258850504935e-7L, 1.192092895507818146886315028596704749235e-7L);
+  TEST_c_c (casin, 0x1p-23L, -0x1p-23L, 1.192092895507806853113684971258850504935e-7L, -1.192092895507818146886315028596704749235e-7L);
+  TEST_c_c (casin, -0x1p-23L, 0x1p-23L, -1.192092895507806853113684971258850504935e-7L, 1.192092895507818146886315028596704749235e-7L);
+  TEST_c_c (casin, -0x1p-23L, -0x1p-23L, -1.192092895507806853113684971258850504935e-7L, -1.192092895507818146886315028596704749235e-7L);
+  /* Bug 15319: underflow exception may be missing.  */
+  TEST_c_c (casin, 0x1.fp-129L, 0x1p-23L, 2.846900380897707329917933005874691056564e-39L, 1.192092895507809676556842485683592032154e-7L, UNDERFLOW_EXCEPTION_OK_FLOAT);
+  TEST_c_c (casin, 0x1.fp-129L, -0x1p-23L, 2.846900380897707329917933005874691056564e-39L, -1.192092895507809676556842485683592032154e-7L, UNDERFLOW_EXCEPTION_OK_FLOAT);
+  TEST_c_c (casin, -0x1.fp-129L, 0x1p-23L, -2.846900380897707329917933005874691056564e-39L, 1.192092895507809676556842485683592032154e-7L, UNDERFLOW_EXCEPTION_OK_FLOAT);
+  TEST_c_c (casin, -0x1.fp-129L, -0x1p-23L, -2.846900380897707329917933005874691056564e-39L, -1.192092895507809676556842485683592032154e-7L, UNDERFLOW_EXCEPTION_OK_FLOAT);
+  TEST_c_c (casin, 0x1p-23L, 0x1.fp-129L, 1.192092895507815323443157514352519154304e-7L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0x1p-23L, 0x1.fp-129L, -1.192092895507815323443157514352519154304e-7L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, 0x1p-23L, -0x1.fp-129L, 1.192092895507815323443157514352519154304e-7L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0x1p-23L, -0x1.fp-129L, -1.192092895507815323443157514352519154304e-7L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, 0.0L, 0x1p-23L, 0.0L, 1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (casin, 0.0L, -0x1p-23L, 0.0L, -1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (casin, -0.0L, 0x1p-23L, -0.0L, 1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (casin, -0.0L, -0x1p-23L, -0.0L, -1.192092895507809676556842485683592032154e-7L);
+  TEST_c_c (casin, 0x1p-23L, 0.0L, 1.192092895507815323443157514352519154304e-7L, 0.0L);
+  TEST_c_c (casin, -0x1p-23L, 0.0L, -1.192092895507815323443157514352519154304e-7L, 0.0L);
+  TEST_c_c (casin, 0x1p-23L, -0.0L, 1.192092895507815323443157514352519154304e-7L, -0.0L);
+  TEST_c_c (casin, -0x1p-23L, -0.0L, -1.192092895507815323443157514352519154304e-7L, -0.0L);
+  TEST_c_c (casin, 0x1.fp-129L, 0x1.fp-129L, 2.846900380897727558361783801085126250967e-39L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, 0x1.fp-129L, -0x1.fp-129L, 2.846900380897727558361783801085126250967e-39L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0x1.fp-129L, 0x1.fp-129L, -2.846900380897727558361783801085126250967e-39L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casin, -0x1.fp-129L, -0x1.fp-129L, -2.846900380897727558361783801085126250967e-39L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+#ifndef TEST_FLOAT
+  TEST_c_c (casin, 0x1p-52L, 0x0.fffffffffffff8p0L, 1.570092458683775146551022293016031474627e-16L, 8.813735870195429467279863907910458761820e-1L);
+  TEST_c_c (casin, 0x1p-52L, -0x0.fffffffffffff8p0L, 1.570092458683775146551022293016031474627e-16L, -8.813735870195429467279863907910458761820e-1L);
+  TEST_c_c (casin, -0x1p-52L, 0x0.fffffffffffff8p0L, -1.570092458683775146551022293016031474627e-16L, 8.813735870195429467279863907910458761820e-1L);
+  TEST_c_c (casin, -0x1p-52L, -0x0.fffffffffffff8p0L, -1.570092458683775146551022293016031474627e-16L, -8.813735870195429467279863907910458761820e-1L);
+  TEST_c_c (casin, 0x0.fffffffffffff8p0L, 0x1p-52L, 1.570796307840326780080580569360500172043L, 1.171456840272878582596796205397918831268e-8L);
+  TEST_c_c (casin, -0x0.fffffffffffff8p0L, 0x1p-52L, -1.570796307840326780080580569360500172043L, 1.171456840272878582596796205397918831268e-8L);
+  TEST_c_c (casin, 0x0.fffffffffffff8p0L, -0x1p-52L, 1.570796307840326780080580569360500172043L, -1.171456840272878582596796205397918831268e-8L);
+  TEST_c_c (casin, -0x0.fffffffffffff8p0L, -0x1p-52L, -1.570796307840326780080580569360500172043L, -1.171456840272878582596796205397918831268e-8L);
+  TEST_c_c (casin, 0x1.fp-1025L, 0x0.fffffffffffff8p0L, 3.810492908885321954658152505985270452320e-309L, 8.813735870195429467279863907910371604180e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0x1.fp-1025L, -0x0.fffffffffffff8p0L, 3.810492908885321954658152505985270452320e-309L, -8.813735870195429467279863907910371604180e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, 0x0.fffffffffffff8p0L, -3.810492908885321954658152505985270452320e-309L, 8.813735870195429467279863907910371604180e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, -0x0.fffffffffffff8p0L, -3.810492908885321954658152505985270452320e-309L, -8.813735870195429467279863907910371604180e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0x0.fffffffffffff8p0L, 0x1.fp-1025L, 1.570796311893735425383665303776316016594L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casin, -0x0.fffffffffffff8p0L, 0x1.fp-1025L, -1.570796311893735425383665303776316016594L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casin, 0x0.fffffffffffff8p0L, -0x1.fp-1025L, 1.570796311893735425383665303776316016594L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casin, -0x0.fffffffffffff8p0L, -0x1.fp-1025L, -1.570796311893735425383665303776316016594L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casin, 0.0L, 0x0.fffffffffffff8p0L, 0.0L, 8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (casin, 0.0L, -0x0.fffffffffffff8p0L, 0.0L, -8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (casin, -0.0L, 0x0.fffffffffffff8p0L, -0.0L, 8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (casin, -0.0L, -0x0.fffffffffffff8p0L, -0.0L, -8.813735870195429467279863907910371604180e-1L);
+  TEST_c_c (casin, 0x0.fffffffffffff8p0L, 0.0L, 1.570796311893735425383665303776316016594L, 0.0L);
+  TEST_c_c (casin, -0x0.fffffffffffff8p0L, 0.0L, -1.570796311893735425383665303776316016594L, 0.0L);
+  TEST_c_c (casin, 0x0.fffffffffffff8p0L, -0.0L, 1.570796311893735425383665303776316016594L, -0.0L);
+  TEST_c_c (casin, -0x0.fffffffffffff8p0L, -0.0L, -1.570796311893735425383665303776316016594L, -0.0L);
+#endif
+  TEST_c_c (casin, 0x1p-52L, 0.5L, 1.986027322597818397661816253158024383707e-16L, 4.812118250596034474977589134243772428682e-1L);
+  TEST_c_c (casin, 0x1p-52L, -0.5L, 1.986027322597818397661816253158024383707e-16L, -4.812118250596034474977589134243772428682e-1L);
+  TEST_c_c (casin, -0x1p-52L, 0.5L, -1.986027322597818397661816253158024383707e-16L, 4.812118250596034474977589134243772428682e-1L);
+  TEST_c_c (casin, -0x1p-52L, -0.5L, -1.986027322597818397661816253158024383707e-16L, -4.812118250596034474977589134243772428682e-1L);
+  TEST_c_c (casin, 0.5L, 0x1p-52L, 5.235987755982988730771072305465648369889e-1L, 2.563950248511418570403591756798643804971e-16L);
+  TEST_c_c (casin, -0.5L, 0x1p-52L, -5.235987755982988730771072305465648369889e-1L, 2.563950248511418570403591756798643804971e-16L);
+  TEST_c_c (casin, 0.5L, -0x1p-52L, 5.235987755982988730771072305465648369889e-1L, -2.563950248511418570403591756798643804971e-16L);
+  TEST_c_c (casin, -0.5L, -0x1p-52L, -5.235987755982988730771072305465648369889e-1L, -2.563950248511418570403591756798643804971e-16L);
+#ifndef TEST_FLOAT
+  TEST_c_c (casin, 0x1.fp-1025L, 0.5L, 4.819934639999230680322935210539402497827e-309L, 4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0x1.fp-1025L, -0.5L, 4.819934639999230680322935210539402497827e-309L, -4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, 0.5L, -4.819934639999230680322935210539402497827e-309L, 4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, -0.5L, -4.819934639999230680322935210539402497827e-309L, -4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0.5L, 0x1.fp-1025L, 5.235987755982988730771072305465838140329e-1L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0.5L, 0x1.fp-1025L, -5.235987755982988730771072305465838140329e-1L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0.5L, -0x1.fp-1025L, 5.235987755982988730771072305465838140329e-1L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0.5L, -0x1.fp-1025L, -5.235987755982988730771072305465838140329e-1L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+  TEST_c_c (casin, 0x1p-52L, 0x1p-52L, 2.220446049250313080847263336181604132852e-16L, 2.220446049250313080847263336181677117148e-16L);
+  TEST_c_c (casin, 0x1p-52L, -0x1p-52L, 2.220446049250313080847263336181604132852e-16L, -2.220446049250313080847263336181677117148e-16L);
+  TEST_c_c (casin, -0x1p-52L, 0x1p-52L, -2.220446049250313080847263336181604132852e-16L, 2.220446049250313080847263336181677117148e-16L);
+  TEST_c_c (casin, -0x1p-52L, -0x1p-52L, -2.220446049250313080847263336181604132852e-16L, -2.220446049250313080847263336181677117148e-16L);
+#ifndef TEST_FLOAT
+  /* Bug 15319: underflow exception may be missing.  */
+  TEST_c_c (casin, 0x1.fp-1025L, 0x1p-52L, 5.388850751072128349671657362289283247603e-309L, 2.220446049250313080847263336181622378926e-16L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casin, 0x1.fp-1025L, -0x1p-52L, 5.388850751072128349671657362289283247603e-309L, -2.220446049250313080847263336181622378926e-16L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, 0x1p-52L, -5.388850751072128349671657362289283247603e-309L, 2.220446049250313080847263336181622378926e-16L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, -0x1p-52L, -5.388850751072128349671657362289283247603e-309L, -2.220446049250313080847263336181622378926e-16L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casin, 0x1p-52L, 0x1.fp-1025L, 2.220446049250313080847263336181658871074e-16L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1p-52L, 0x1.fp-1025L, -2.220446049250313080847263336181658871074e-16L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0x1p-52L, -0x1.fp-1025L, 2.220446049250313080847263336181658871074e-16L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1p-52L, -0x1.fp-1025L, -2.220446049250313080847263336181658871074e-16L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+  TEST_c_c (casin, 0.0L, 0x1p-52L, 0.0L, 2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (casin, 0.0L, -0x1p-52L, 0.0L, -2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (casin, -0.0L, 0x1p-52L, -0.0L, 2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (casin, -0.0L, -0x1p-52L, -0.0L, -2.220446049250313080847263336181622378926e-16L);
+  TEST_c_c (casin, 0x1p-52L, 0.0L, 2.220446049250313080847263336181658871074e-16L, 0.0L);
+  TEST_c_c (casin, -0x1p-52L, 0.0L, -2.220446049250313080847263336181658871074e-16L, 0.0L);
+  TEST_c_c (casin, 0x1p-52L, -0.0L, 2.220446049250313080847263336181658871074e-16L, -0.0L);
+  TEST_c_c (casin, -0x1p-52L, -0.0L, -2.220446049250313080847263336181658871074e-16L, -0.0L);
+#ifndef TEST_FLOAT
+  TEST_c_c (casin, 0x1.fp-1025L, 0x1.fp-1025L, 5.388850751072128349671657362289416093031e-309L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0x1.fp-1025L, -0x1.fp-1025L, 5.388850751072128349671657362289416093031e-309L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, 0x1.fp-1025L, -5.388850751072128349671657362289416093031e-309L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, -0x1.fp-1025L, -5.388850751072128349671657362289416093031e-309L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+  TEST_c_c (casin, 0x1p-63L, 0x0.ffffffffffffffffp0L, 7.666467083416870407402049869781566856442e-20L, 8.813735870195430251942769895627079569937e-1L);
+  TEST_c_c (casin, 0x1p-63L, -0x0.ffffffffffffffffp0L, 7.666467083416870407402049869781566856442e-20L, -8.813735870195430251942769895627079569937e-1L);
+  TEST_c_c (casin, -0x1p-63L, 0x0.ffffffffffffffffp0L, -7.666467083416870407402049869781566856442e-20L, 8.813735870195430251942769895627079569937e-1L);
+  TEST_c_c (casin, -0x1p-63L, -0x0.ffffffffffffffffp0L, -7.666467083416870407402049869781566856442e-20L, -8.813735870195430251942769895627079569937e-1L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffp0L, 0x1p-63L, 1.570796326376055842114524927965556247908L, 2.588578361325995866221775673638805081337e-10L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffp0L, 0x1p-63L, -1.570796326376055842114524927965556247908L, 2.588578361325995866221775673638805081337e-10L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffp0L, -0x1p-63L, 1.570796326376055842114524927965556247908L, -2.588578361325995866221775673638805081337e-10L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffp0L, -0x1p-63L, -1.570796326376055842114524927965556247908L, -2.588578361325995866221775673638805081337e-10L);
+# if LDBL_MIN_EXP <= -16381
+  TEST_c_c (casin, 0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 5.757683115456107044287327268904964422212e-4933L, 8.813735870195430251942769895627079569917e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 5.757683115456107044287327268904964422212e-4933L, -8.813735870195430251942769895627079569917e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, 0x0.ffffffffffffffffp0L, -5.757683115456107044287327268904964422212e-4933L, 8.813735870195430251942769895627079569917e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, -0x0.ffffffffffffffffp0L, -5.757683115456107044287327268904964422212e-4933L, -8.813735870195430251942769895627079569917e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 1.570796326465624365239962068302568888898L, 2.472906068161537187835415298076415423459e-4923L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffp0L, 0x1.fp-16385L, -1.570796326465624365239962068302568888898L, 2.472906068161537187835415298076415423459e-4923L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffp0L, -0x1.fp-16385L, 1.570796326465624365239962068302568888898L, -2.472906068161537187835415298076415423459e-4923L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffp0L, -0x1.fp-16385L, -1.570796326465624365239962068302568888898L, -2.472906068161537187835415298076415423459e-4923L);
+# endif
+  TEST_c_c (casin, 0.0L, 0x0.ffffffffffffffffp0L, 0.0L, 8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (casin, 0.0L, -0x0.ffffffffffffffffp0L, 0.0L, -8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (casin, -0.0L, 0x0.ffffffffffffffffp0L, -0.0L, 8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (casin, -0.0L, -0x0.ffffffffffffffffp0L, -0.0L, -8.813735870195430251942769895627079569917e-1L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffp0L, 0.0L, 1.570796326465624365239962068302568888898L, 0.0L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffp0L, 0.0L, -1.570796326465624365239962068302568888898L, 0.0L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffp0L, -0.0L, 1.570796326465624365239962068302568888898L, -0.0L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffp0L, -0.0L, -1.570796326465624365239962068302568888898L, -0.0L);
+#endif
+  TEST_c_c (casin, 0x1p-63L, 0.5L, 9.697399036122160144833087173623140436413e-20L, 4.812118250596034474977589134243684231373e-1L);
+  TEST_c_c (casin, 0x1p-63L, -0.5L, 9.697399036122160144833087173623140436413e-20L, -4.812118250596034474977589134243684231373e-1L);
+  TEST_c_c (casin, -0x1p-63L, 0.5L, -9.697399036122160144833087173623140436413e-20L, 4.812118250596034474977589134243684231373e-1L);
+  TEST_c_c (casin, -0x1p-63L, -0.5L, -9.697399036122160144833087173623140436413e-20L, -4.812118250596034474977589134243684231373e-1L);
+  TEST_c_c (casin, 0.5L, 0x1p-63L, 5.235987755982988730771072305465838140283e-1L, 1.251928832280966098829878787499365228659e-19L);
+  TEST_c_c (casin, -0.5L, 0x1p-63L, -5.235987755982988730771072305465838140283e-1L, 1.251928832280966098829878787499365228659e-19L);
+  TEST_c_c (casin, 0.5L, -0x1p-63L, 5.235987755982988730771072305465838140283e-1L, -1.251928832280966098829878787499365228659e-19L);
+  TEST_c_c (casin, -0.5L, -0x1p-63L, -5.235987755982988730771072305465838140283e-1L, -1.251928832280966098829878787499365228659e-19L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (casin, 0x1.fp-16385L, 0.5L, 7.282957076134209141226696333885150260319e-4933L, 4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1.fp-16385L, -0.5L, 7.282957076134209141226696333885150260319e-4933L, -4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, 0.5L, -7.282957076134209141226696333885150260319e-4933L, 4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, -0.5L, -7.282957076134209141226696333885150260319e-4933L, -4.812118250596034474977589134243684231352e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0.5L, 0x1.fp-16385L, 5.235987755982988730771072305465838140329e-1L, 9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0.5L, 0x1.fp-16385L, -5.235987755982988730771072305465838140329e-1L, 9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0.5L, -0x1.fp-16385L, 5.235987755982988730771072305465838140329e-1L, -9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0.5L, -0x1.fp-16385L, -5.235987755982988730771072305465838140329e-1L, -9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+  TEST_c_c (casin, 0x1p-63L, 0x1p-63L, 1.084202172485504434007452800869941711422e-19L, 1.084202172485504434007452800869941711430e-19L);
+  TEST_c_c (casin, 0x1p-63L, -0x1p-63L, 1.084202172485504434007452800869941711422e-19L, -1.084202172485504434007452800869941711430e-19L);
+  TEST_c_c (casin, -0x1p-63L, 0x1p-63L, -1.084202172485504434007452800869941711422e-19L, 1.084202172485504434007452800869941711430e-19L);
+  TEST_c_c (casin, -0x1p-63L, -0x1p-63L, -1.084202172485504434007452800869941711422e-19L, -1.084202172485504434007452800869941711430e-19L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (casin, 0x1.fp-16385L, 0x1p-63L, 8.142593549724601460479922838826119584369e-4933L, 1.084202172485504434007452800869941711424e-19L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1.fp-16385L, -0x1p-63L, 8.142593549724601460479922838826119584369e-4933L, -1.084202172485504434007452800869941711424e-19L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, 0x1p-63L, -8.142593549724601460479922838826119584369e-4933L, 1.084202172485504434007452800869941711424e-19L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, -0x1p-63L, -8.142593549724601460479922838826119584369e-4933L, -1.084202172485504434007452800869941711424e-19L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1p-63L, 0x1.fp-16385L, 1.084202172485504434007452800869941711428e-19L, 8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1p-63L, 0x1.fp-16385L, -1.084202172485504434007452800869941711428e-19L, 8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1p-63L, -0x1.fp-16385L, 1.084202172485504434007452800869941711428e-19L, -8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1p-63L, -0x1.fp-16385L, -1.084202172485504434007452800869941711428e-19L, -8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+  TEST_c_c (casin, 0.0L, 0x1p-63L, 0.0L, 1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (casin, 0.0L, -0x1p-63L, 0.0L, -1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (casin, -0.0L, 0x1p-63L, -0.0L, 1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (casin, -0.0L, -0x1p-63L, -0.0L, -1.084202172485504434007452800869941711424e-19L);
+  TEST_c_c (casin, 0x1p-63L, 0.0L, 1.084202172485504434007452800869941711428e-19L, 0.0L);
+  TEST_c_c (casin, -0x1p-63L, 0.0L, -1.084202172485504434007452800869941711428e-19L, 0.0L);
+  TEST_c_c (casin, 0x1p-63L, -0.0L, 1.084202172485504434007452800869941711428e-19L, -0.0L);
+  TEST_c_c (casin, -0x1p-63L, -0.0L, -1.084202172485504434007452800869941711428e-19L, -0.0L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (casin, 0x1.fp-16385L, 0x1.fp-16385L, 8.142593549724601460479922838826119584417e-4933L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1.fp-16385L, -0x1.fp-16385L, 8.142593549724601460479922838826119584417e-4933L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, 0x1.fp-16385L, -8.142593549724601460479922838826119584417e-4933L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, -0x1.fp-16385L, -8.142593549724601460479922838826119584417e-4933L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 106
+  TEST_c_c (casin, 0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, 1.743152798421049375791483240187377443526e-32L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (casin, 0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, 1.743152798421049375791483240187377443526e-32L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (casin, -0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, -1.743152798421049375791483240187377443526e-32L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (casin, -0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, -1.743152798421049375791483240187377443526e-32L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, 1.570796326794896419512475791677915736035L, 1.234330349600789959989661887846005659983e-16L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, -1.570796326794896419512475791677915736035L, 1.234330349600789959989661887846005659983e-16L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, 1.570796326794896419512475791677915736035L, -1.234330349600789959989661887846005659983e-16L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, -1.570796326794896419512475791677915736035L, -1.234330349600789959989661887846005659983e-16L);
+  TEST_c_c (casin, 0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, 3.810492908885321743133304375216641110205e-309L, 8.813735870195430252326093249797835932642e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, 3.810492908885321743133304375216641110205e-309L, -8.813735870195430252326093249797835932642e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, -3.810492908885321743133304375216641110205e-309L, 8.813735870195430252326093249797835932642e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, -3.810492908885321743133304375216641110205e-309L, -8.813735870195430252326093249797835932642e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, 1.570796326794896462222075823262245502760L, 3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, -1.570796326794896462222075823262245502760L, 3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, 1.570796326794896462222075823262245502760L, -3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, -1.570796326794896462222075823262245502760L, -3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casin, 0.0L, 0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (casin, 0.0L, -0x0.ffffffffffffffffffffffffffcp0L, 0.0L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (casin, -0.0L, 0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (casin, -0.0L, -0x0.ffffffffffffffffffffffffffcp0L, -0.0L, -8.813735870195430252326093249797835932642e-1L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 1.570796326794896462222075823262245502760L, 0.0L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffcp0L, 0.0L, -1.570796326794896462222075823262245502760L, 0.0L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 1.570796326794896462222075823262245502760L, -0.0L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffcp0L, -0.0L, -1.570796326794896462222075823262245502760L, -0.0L);
+#endif
+  TEST_c_c (casin, 0x1p-105L, 0.5L, 2.204933261082751447436996198490110245167e-32L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (casin, 0x1p-105L, -0.5L, 2.204933261082751447436996198490110245167e-32L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (casin, -0x1p-105L, 0.5L, -2.204933261082751447436996198490110245167e-32L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (casin, -0x1p-105L, -0.5L, -2.204933261082751447436996198490110245167e-32L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (casin, 0.5L, 0x1p-105L, 5.235987755982988730771072305465838140329e-1L, 2.846556599890768890940941645338546615370e-32L);
+  TEST_c_c (casin, -0.5L, 0x1p-105L, -5.235987755982988730771072305465838140329e-1L, 2.846556599890768890940941645338546615370e-32L);
+  TEST_c_c (casin, 0.5L, -0x1p-105L, 5.235987755982988730771072305465838140329e-1L, -2.846556599890768890940941645338546615370e-32L);
+  TEST_c_c (casin, -0.5L, -0x1p-105L, -5.235987755982988730771072305465838140329e-1L, -2.846556599890768890940941645338546615370e-32L);
+  TEST_c_c (casin, 0x1p-105L, 0x1p-105L, 2.465190328815661891911651766508706967729e-32L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casin, 0x1p-105L, -0x1p-105L, 2.465190328815661891911651766508706967729e-32L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casin, -0x1p-105L, 0x1p-105L, -2.465190328815661891911651766508706967729e-32L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casin, -0x1p-105L, -0x1p-105L, -2.465190328815661891911651766508706967729e-32L, -2.465190328815661891911651766508706967729e-32L);
+#ifndef TEST_FLOAT
+  /* Bug 15319: underflow exception may be missing.  */
+  TEST_c_c (casin, 0x1.fp-1025L, 0x1p-105L, 5.388850751072128349671657362289416093031e-309L, 2.465190328815661891911651766508706967729e-32L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casin, 0x1.fp-1025L, -0x1p-105L, 5.388850751072128349671657362289416093031e-309L, -2.465190328815661891911651766508706967729e-32L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, 0x1p-105L, -5.388850751072128349671657362289416093031e-309L, 2.465190328815661891911651766508706967729e-32L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casin, -0x1.fp-1025L, -0x1p-105L, -5.388850751072128349671657362289416093031e-309L, -2.465190328815661891911651766508706967729e-32L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casin, 0x1p-105L, 0x1.fp-1025L, 2.465190328815661891911651766508706967729e-32L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1p-105L, 0x1.fp-1025L, -2.465190328815661891911651766508706967729e-32L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, 0x1p-105L, -0x1.fp-1025L, 2.465190328815661891911651766508706967729e-32L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casin, -0x1p-105L, -0x1.fp-1025L, -2.465190328815661891911651766508706967729e-32L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+  TEST_c_c (casin, 0.0L, 0x1p-105L, 0.0L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casin, 0.0L, -0x1p-105L, 0.0L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casin, -0.0L, 0x1p-105L, -0.0L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casin, -0.0L, -0x1p-105L, -0.0L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casin, 0x1p-105L, 0.0L, 2.465190328815661891911651766508706967729e-32L, 0.0L);
+  TEST_c_c (casin, -0x1p-105L, 0.0L, -2.465190328815661891911651766508706967729e-32L, 0.0L);
+  TEST_c_c (casin, 0x1p-105L, -0.0L, 2.465190328815661891911651766508706967729e-32L, -0.0L);
+  TEST_c_c (casin, -0x1p-105L, -0.0L, -2.465190328815661891911651766508706967729e-32L, -0.0L);
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 113
+  TEST_c_c (casin, 0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.361838123766444824837096281396380300349e-34L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (casin, 0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.361838123766444824837096281396380300349e-34L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (casin, -0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, -1.361838123766444824837096281396380300349e-34L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (casin, -0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, -1.361838123766444824837096281396380300349e-34L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, 1.570796326794896601578502908312986698624L, 1.091004200533850618345330909857103457781e-17L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, -1.570796326794896601578502908312986698624L, 1.091004200533850618345330909857103457781e-17L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, 1.570796326794896601578502908312986698624L, -1.091004200533850618345330909857103457781e-17L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, -1.570796326794896601578502908312986698624L, -1.091004200533850618345330909857103457781e-17L);
+  TEST_c_c (casin, 0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, 5.757683115456107044131264955348449231681e-4933L, 8.813735870195430252326093249797922409363e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, 5.757683115456107044131264955348449231681e-4933L, -8.813735870195430252326093249797922409363e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, -5.757683115456107044131264955348449231681e-4933L, 8.813735870195430252326093249797922409363e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, -5.757683115456107044131264955348449231681e-4933L, -8.813735870195430252326093249797922409363e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, 1.570796326794896605353533883825294686803L, 5.867357004219059108790368268900490184505e-4916L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, -1.570796326794896605353533883825294686803L, 5.867357004219059108790368268900490184505e-4916L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, 1.570796326794896605353533883825294686803L, -5.867357004219059108790368268900490184505e-4916L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, -1.570796326794896605353533883825294686803L, -5.867357004219059108790368268900490184505e-4916L);
+  TEST_c_c (casin, 0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (casin, 0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (casin, -0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (casin, -0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, -8.813735870195430252326093249797922409363e-1L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 1.570796326794896605353533883825294686803L, 0.0L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, -1.570796326794896605353533883825294686803L, 0.0L);
+  TEST_c_c (casin, 0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 1.570796326794896605353533883825294686803L, -0.0L);
+  TEST_c_c (casin, -0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, -1.570796326794896605353533883825294686803L, -0.0L);
+#endif
+  TEST_c_c (casin, 0x1p-112L, 0.5L, 1.722604110220899568310153280070398629037e-34L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (casin, 0x1p-112L, -0.5L, 1.722604110220899568310153280070398629037e-34L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (casin, -0x1p-112L, 0.5L, -1.722604110220899568310153280070398629037e-34L, 4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (casin, -0x1p-112L, -0.5L, -1.722604110220899568310153280070398629037e-34L, -4.812118250596034474977589134243684231352e-1L);
+  TEST_c_c (casin, 0.5L, 0x1p-112L, 5.235987755982988730771072305465838140329e-1L, 2.223872343664663196047610660420739543258e-34L);
+  TEST_c_c (casin, -0.5L, 0x1p-112L, -5.235987755982988730771072305465838140329e-1L, 2.223872343664663196047610660420739543258e-34L);
+  TEST_c_c (casin, 0.5L, -0x1p-112L, 5.235987755982988730771072305465838140329e-1L, -2.223872343664663196047610660420739543258e-34L);
+  TEST_c_c (casin, -0.5L, -0x1p-112L, -5.235987755982988730771072305465838140329e-1L, -2.223872343664663196047610660420739543258e-34L);
+  TEST_c_c (casin, 0x1p-112L, 0x1p-112L, 1.925929944387235853055977942584927318538e-34L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casin, 0x1p-112L, -0x1p-112L, 1.925929944387235853055977942584927318538e-34L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casin, -0x1p-112L, 0x1p-112L, -1.925929944387235853055977942584927318538e-34L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casin, -0x1p-112L, -0x1p-112L, -1.925929944387235853055977942584927318538e-34L, -1.925929944387235853055977942584927318538e-34L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (casin, 0x1.fp-16385L, 0x1p-112L, 8.142593549724601460479922838826119584417e-4933L, 1.925929944387235853055977942584927318538e-34L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1.fp-16385L, -0x1p-112L, 8.142593549724601460479922838826119584417e-4933L, -1.925929944387235853055977942584927318538e-34L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, 0x1p-112L, -8.142593549724601460479922838826119584417e-4933L, 1.925929944387235853055977942584927318538e-34L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1.fp-16385L, -0x1p-112L, -8.142593549724601460479922838826119584417e-4933L, -1.925929944387235853055977942584927318538e-34L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1p-112L, 0x1.fp-16385L, 1.925929944387235853055977942584927318538e-34L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1p-112L, 0x1.fp-16385L, -1.925929944387235853055977942584927318538e-34L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, 0x1p-112L, -0x1.fp-16385L, 1.925929944387235853055977942584927318538e-34L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casin, -0x1p-112L, -0x1.fp-16385L, -1.925929944387235853055977942584927318538e-34L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+  TEST_c_c (casin, 0.0L, 0x1p-112L, 0.0L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casin, 0.0L, -0x1p-112L, 0.0L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casin, -0.0L, 0x1p-112L, -0.0L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casin, -0.0L, -0x1p-112L, -0.0L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casin, 0x1p-112L, 0.0L, 1.925929944387235853055977942584927318538e-34L, 0.0L);
+  TEST_c_c (casin, -0x1p-112L, 0.0L, -1.925929944387235853055977942584927318538e-34L, 0.0L);
+  TEST_c_c (casin, 0x1p-112L, -0.0L, 1.925929944387235853055977942584927318538e-34L, -0.0L);
+  TEST_c_c (casin, -0x1p-112L, -0.0L, -1.925929944387235853055977942584927318538e-34L, -0.0L);
+
   TEST_c_c (casin, 0.75L, 1.25L, 0.453276177638793913448921196101971749L, 1.13239363160530819522266333696834467L);
   TEST_c_c (casin, -2, -3, -0.57065278432109940071028387968566963L, -1.9833870299165354323470769028940395L);
 
@@ -2635,6 +3286,332 @@ casinh_test (void)
   TEST_c_c (casinh, -0x1.0000000000000000000000000001p0L, -0.0L, -8.813735870195430252326093249797924452120e-1L, -0.0L)
 #endif
 
+  TEST_c_c (casinh, 0x1p-23L, 0x0.ffffffp0L, 2.714321200917194650737217746780928423385e-4L, 1.570357140408705570520377172865353621698L);
+  TEST_c_c (casinh, 0x1p-23L, -0x0.ffffffp0L, 2.714321200917194650737217746780928423385e-4L, -1.570357140408705570520377172865353621698L);
+  TEST_c_c (casinh, -0x1p-23L, 0x0.ffffffp0L, -2.714321200917194650737217746780928423385e-4L, 1.570357140408705570520377172865353621698L);
+  TEST_c_c (casinh, -0x1p-23L, -0x0.ffffffp0L, -2.714321200917194650737217746780928423385e-4L, -1.570357140408705570520377172865353621698L);
+  TEST_c_c (casinh, 0x0.ffffffp0L, 0x1p-23L, 8.813735448726963984495965873956465777250e-1L, 8.429369953393598499000760938112968755257e-8L);
+  TEST_c_c (casinh, -0x0.ffffffp0L, 0x1p-23L, -8.813735448726963984495965873956465777250e-1L, 8.429369953393598499000760938112968755257e-8L);
+  TEST_c_c (casinh, 0x0.ffffffp0L, -0x1p-23L, 8.813735448726963984495965873956465777250e-1L, -8.429369953393598499000760938112968755257e-8L);
+  TEST_c_c (casinh, -0x0.ffffffp0L, -0x1p-23L, -8.813735448726963984495965873956465777250e-1L, -8.429369953393598499000760938112968755257e-8L);
+  TEST_c_c (casinh, 0x1.fp-129L, 0x0.ffffffp0L, 8.245504387859737323891843603996428534945e-36L, 1.570451059810180415643718442157112705601L);
+  TEST_c_c (casinh, 0x1.fp-129L, -0x0.ffffffp0L, 8.245504387859737323891843603996428534945e-36L, -1.570451059810180415643718442157112705601L);
+  TEST_c_c (casinh, -0x1.fp-129L, 0x0.ffffffp0L, -8.245504387859737323891843603996428534945e-36L, 1.570451059810180415643718442157112705601L);
+  TEST_c_c (casinh, -0x1.fp-129L, -0x0.ffffffp0L, -8.245504387859737323891843603996428534945e-36L, -1.570451059810180415643718442157112705601L);
+  TEST_c_c (casinh, 0x0.ffffffp0L, 0x1.fp-129L, 8.813735448726938863015878255140556727969e-1L, 2.013062624689288675911339929224634593425e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0x0.ffffffp0L, 0x1.fp-129L, -8.813735448726938863015878255140556727969e-1L, 2.013062624689288675911339929224634593425e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, 0x0.ffffffp0L, -0x1.fp-129L, 8.813735448726938863015878255140556727969e-1L, -2.013062624689288675911339929224634593425e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0x0.ffffffp0L, -0x1.fp-129L, -8.813735448726938863015878255140556727969e-1L, -2.013062624689288675911339929224634593425e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, 0.0L, 0x0.ffffffp0L, 0.0L, 1.570451059810180415643718442157112705601L);
+  TEST_c_c (casinh, 0.0L, -0x0.ffffffp0L, 0.0L, -1.570451059810180415643718442157112705601L);
+  TEST_c_c (casinh, -0.0L, 0x0.ffffffp0L, -0.0L, 1.570451059810180415643718442157112705601L);
+  TEST_c_c (casinh, -0.0L, -0x0.ffffffp0L, -0.0L, -1.570451059810180415643718442157112705601L);
+  TEST_c_c (casinh, 0x0.ffffffp0L, 0.0L, 8.813735448726938863015878255140556727969e-1L, 0.0L);
+  TEST_c_c (casinh, -0x0.ffffffp0L, 0.0L, -8.813735448726938863015878255140556727969e-1L, 0.0L);
+  TEST_c_c (casinh, 0x0.ffffffp0L, -0.0L, 8.813735448726938863015878255140556727969e-1L, -0.0L);
+  TEST_c_c (casinh, -0x0.ffffffp0L, -0.0L, -8.813735448726938863015878255140556727969e-1L, -0.0L);
+  TEST_c_c (casinh, 0x1p-23L, 0.5L, 1.376510308240943236356088341381173571841e-7L, 5.235987755982934033165770729745469098254e-1L);
+  TEST_c_c (casinh, 0x1p-23L, -0.5L, 1.376510308240943236356088341381173571841e-7L, -5.235987755982934033165770729745469098254e-1L);
+  TEST_c_c (casinh, -0x1p-23L, 0.5L, -1.376510308240943236356088341381173571841e-7L, 5.235987755982934033165770729745469098254e-1L);
+  TEST_c_c (casinh, -0x1p-23L, -0.5L, -1.376510308240943236356088341381173571841e-7L, -5.235987755982934033165770729745469098254e-1L);
+  TEST_c_c (casinh, 0.5L, 0x1p-23L, 4.812118250596059896127318386463676808798e-1L, 1.066240299940009780479664302917201696886e-7L);
+  TEST_c_c (casinh, -0.5L, 0x1p-23L, -4.812118250596059896127318386463676808798e-1L, 1.066240299940009780479664302917201696886e-7L);
+  TEST_c_c (casinh, 0.5L, -0x1p-23L, 4.812118250596059896127318386463676808798e-1L, -1.066240299940009780479664302917201696886e-7L);
+  TEST_c_c (casinh, -0.5L, -0x1p-23L, -4.812118250596059896127318386463676808798e-1L, -1.066240299940009780479664302917201696886e-7L);
+  TEST_c_c (casinh, 0x1.fp-129L, 0.5L, 3.287317402534702257036015056278368274737e-39L, 5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, 0x1.fp-129L, -0.5L, 3.287317402534702257036015056278368274737e-39L, -5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0x1.fp-129L, 0.5L, -3.287317402534702257036015056278368274737e-39L, 5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0x1.fp-129L, -0.5L, -3.287317402534702257036015056278368274737e-39L, -5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, 0.5L, 0x1.fp-129L, 4.812118250596034474977589134243684231352e-1L, 2.546345110742945032959687790021055102355e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0.5L, 0x1.fp-129L, -4.812118250596034474977589134243684231352e-1L, 2.546345110742945032959687790021055102355e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, 0.5L, -0x1.fp-129L, 4.812118250596034474977589134243684231352e-1L, -2.546345110742945032959687790021055102355e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0.5L, -0x1.fp-129L, -4.812118250596034474977589134243684231352e-1L, -2.546345110742945032959687790021055102355e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, 0x1p-23L, 0x1p-23L, 1.192092895507818146886315028596704749235e-7L, 1.192092895507806853113684971258850504935e-7L);
+  TEST_c_c (casinh, 0x1p-23L, -0x1p-23L, 1.192092895507818146886315028596704749235e-7L, -1.192092895507806853113684971258850504935e-7L);
+  TEST_c_c (casinh, -0x1p-23L, 0x1p-23L, -1.192092895507818146886315028596704749235e-7L, 1.192092895507806853113684971258850504935e-7L);
+  TEST_c_c (casinh, -0x1p-23L, -0x1p-23L, -1.192092895507818146886315028596704749235e-7L, -1.192092895507806853113684971258850504935e-7L);
+  TEST_c_c (casinh, 0x1.fp-129L, 0x1p-23L, 2.846900380897747786805634596726756660388e-39L, 1.192092895507815323443157514352519154304e-7L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, 0x1.fp-129L, -0x1p-23L, 2.846900380897747786805634596726756660388e-39L, -1.192092895507815323443157514352519154304e-7L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0x1.fp-129L, 0x1p-23L, -2.846900380897747786805634596726756660388e-39L, 1.192092895507815323443157514352519154304e-7L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0x1.fp-129L, -0x1p-23L, -2.846900380897747786805634596726756660388e-39L, -1.192092895507815323443157514352519154304e-7L, UNDERFLOW_EXCEPTION_FLOAT);
+  /* Bug 15319: underflow exception may be missing.  */
+  TEST_c_c (casinh, 0x1p-23L, 0x1.fp-129L, 1.192092895507809676556842485683592032154e-7L, 2.846900380897707329917933005874691056564e-39L, UNDERFLOW_EXCEPTION_OK_FLOAT);
+  TEST_c_c (casinh, -0x1p-23L, 0x1.fp-129L, -1.192092895507809676556842485683592032154e-7L, 2.846900380897707329917933005874691056564e-39L, UNDERFLOW_EXCEPTION_OK_FLOAT);
+  TEST_c_c (casinh, 0x1p-23L, -0x1.fp-129L, 1.192092895507809676556842485683592032154e-7L, -2.846900380897707329917933005874691056564e-39L, UNDERFLOW_EXCEPTION_OK_FLOAT);
+  TEST_c_c (casinh, -0x1p-23L, -0x1.fp-129L, -1.192092895507809676556842485683592032154e-7L, -2.846900380897707329917933005874691056564e-39L, UNDERFLOW_EXCEPTION_OK_FLOAT);
+  TEST_c_c (casinh, 0.0L, 0x1p-23L, 0.0L, 1.192092895507815323443157514352519154304e-7L);
+  TEST_c_c (casinh, 0.0L, -0x1p-23L, 0.0L, -1.192092895507815323443157514352519154304e-7L);
+  TEST_c_c (casinh, -0.0L, 0x1p-23L, -0.0L, 1.192092895507815323443157514352519154304e-7L);
+  TEST_c_c (casinh, -0.0L, -0x1p-23L, -0.0L, -1.192092895507815323443157514352519154304e-7L);
+  TEST_c_c (casinh, 0x1p-23L, 0.0L, 1.192092895507809676556842485683592032154e-7L, 0.0L);
+  TEST_c_c (casinh, -0x1p-23L, 0.0L, -1.192092895507809676556842485683592032154e-7L, 0.0L);
+  TEST_c_c (casinh, 0x1p-23L, -0.0L, 1.192092895507809676556842485683592032154e-7L, -0.0L);
+  TEST_c_c (casinh, -0x1p-23L, -0.0L, -1.192092895507809676556842485683592032154e-7L, -0.0L);
+  TEST_c_c (casinh, 0x1.fp-129L, 0x1.fp-129L, 2.846900380897727558361783801085126250967e-39L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, 0x1.fp-129L, -0x1.fp-129L, 2.846900380897727558361783801085126250967e-39L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0x1.fp-129L, 0x1.fp-129L, -2.846900380897727558361783801085126250967e-39L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+  TEST_c_c (casinh, -0x1.fp-129L, -0x1.fp-129L, -2.846900380897727558361783801085126250967e-39L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT);
+#ifndef TEST_FLOAT
+  TEST_c_c (casinh, 0x1p-52L, 0x0.fffffffffffff8p0L, 1.171456840272878582596796205397918831268e-8L, 1.570796307840326780080580569360500172043L);
+  TEST_c_c (casinh, 0x1p-52L, -0x0.fffffffffffff8p0L, 1.171456840272878582596796205397918831268e-8L, -1.570796307840326780080580569360500172043L);
+  TEST_c_c (casinh, -0x1p-52L, 0x0.fffffffffffff8p0L, -1.171456840272878582596796205397918831268e-8L, 1.570796307840326780080580569360500172043L);
+  TEST_c_c (casinh, -0x1p-52L, -0x0.fffffffffffff8p0L, -1.171456840272878582596796205397918831268e-8L, -1.570796307840326780080580569360500172043L);
+  TEST_c_c (casinh, 0x0.fffffffffffff8p0L, 0x1p-52L, 8.813735870195429467279863907910458761820e-1L, 1.570092458683775146551022293016031474627e-16L);
+  TEST_c_c (casinh, -0x0.fffffffffffff8p0L, 0x1p-52L, -8.813735870195429467279863907910458761820e-1L, 1.570092458683775146551022293016031474627e-16L);
+  TEST_c_c (casinh, 0x0.fffffffffffff8p0L, -0x1p-52L, 8.813735870195429467279863907910458761820e-1L, -1.570092458683775146551022293016031474627e-16L);
+  TEST_c_c (casinh, -0x0.fffffffffffff8p0L, -0x1p-52L, -8.813735870195429467279863907910458761820e-1L, -1.570092458683775146551022293016031474627e-16L);
+  TEST_c_c (casinh, 0x1.fp-1025L, 0x0.fffffffffffff8p0L, 3.616396521699973256461764099945789620604e-301L, 1.570796311893735425383665303776316016594L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casinh, 0x1.fp-1025L, -0x0.fffffffffffff8p0L, 3.616396521699973256461764099945789620604e-301L, -1.570796311893735425383665303776316016594L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casinh, -0x1.fp-1025L, 0x0.fffffffffffff8p0L, -3.616396521699973256461764099945789620604e-301L, 1.570796311893735425383665303776316016594L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casinh, -0x1.fp-1025L, -0x0.fffffffffffff8p0L, -3.616396521699973256461764099945789620604e-301L, -1.570796311893735425383665303776316016594L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casinh, 0x0.fffffffffffff8p0L, 0x1.fp-1025L, 8.813735870195429467279863907910371604180e-1L, 3.810492908885321954658152505985270452320e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x0.fffffffffffff8p0L, 0x1.fp-1025L, -8.813735870195429467279863907910371604180e-1L, 3.810492908885321954658152505985270452320e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0x0.fffffffffffff8p0L, -0x1.fp-1025L, 8.813735870195429467279863907910371604180e-1L, -3.810492908885321954658152505985270452320e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x0.fffffffffffff8p0L, -0x1.fp-1025L, -8.813735870195429467279863907910371604180e-1L, -3.810492908885321954658152505985270452320e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0.0L, 0x0.fffffffffffff8p0L, 0.0L, 1.570796311893735425383665303776316016594L);
+  TEST_c_c (casinh, 0.0L, -0x0.fffffffffffff8p0L, 0.0L, -1.570796311893735425383665303776316016594L);
+  TEST_c_c (casinh, -0.0L, 0x0.fffffffffffff8p0L, -0.0L, 1.570796311893735425383665303776316016594L);
+  TEST_c_c (casinh, -0.0L, -0x0.fffffffffffff8p0L, -0.0L, -1.570796311893735425383665303776316016594L);
+  TEST_c_c (casinh, 0x0.fffffffffffff8p0L, 0.0L, 8.813735870195429467279863907910371604180e-1L, 0.0L);
+  TEST_c_c (casinh, -0x0.fffffffffffff8p0L, 0.0L, -8.813735870195429467279863907910371604180e-1L, 0.0L);
+  TEST_c_c (casinh, 0x0.fffffffffffff8p0L, -0.0L, 8.813735870195429467279863907910371604180e-1L, -0.0L);
+  TEST_c_c (casinh, -0x0.fffffffffffff8p0L, -0.0L, -8.813735870195429467279863907910371604180e-1L, -0.0L);
+#endif
+  TEST_c_c (casinh, 0x1p-52L, 0.5L, 2.563950248511418570403591756798643804971e-16L, 5.235987755982988730771072305465648369889e-1L);
+  TEST_c_c (casinh, 0x1p-52L, -0.5L, 2.563950248511418570403591756798643804971e-16L, -5.235987755982988730771072305465648369889e-1L);
+  TEST_c_c (casinh, -0x1p-52L, 0.5L, -2.563950248511418570403591756798643804971e-16L, 5.235987755982988730771072305465648369889e-1L);
+  TEST_c_c (casinh, -0x1p-52L, -0.5L, -2.563950248511418570403591756798643804971e-16L, -5.235987755982988730771072305465648369889e-1L);
+  TEST_c_c (casinh, 0.5L, 0x1p-52L, 4.812118250596034474977589134243772428682e-1L, 1.986027322597818397661816253158024383707e-16L);
+  TEST_c_c (casinh, -0.5L, 0x1p-52L, -4.812118250596034474977589134243772428682e-1L, 1.986027322597818397661816253158024383707e-16L);
+  TEST_c_c (casinh, 0.5L, -0x1p-52L, 4.812118250596034474977589134243772428682e-1L, -1.986027322597818397661816253158024383707e-16L);
+  TEST_c_c (casinh, -0.5L, -0x1p-52L, -4.812118250596034474977589134243772428682e-1L, -1.986027322597818397661816253158024383707e-16L);
+#ifndef TEST_FLOAT
+  TEST_c_c (casinh, 0x1.fp-1025L, 0.5L, 6.222508863508420569166420770843207333493e-309L, 5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0x1.fp-1025L, -0.5L, 6.222508863508420569166420770843207333493e-309L, -5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x1.fp-1025L, 0.5L, -6.222508863508420569166420770843207333493e-309L, 5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x1.fp-1025L, -0.5L, -6.222508863508420569166420770843207333493e-309L, -5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0.5L, 0x1.fp-1025L, 4.812118250596034474977589134243684231352e-1L, 4.819934639999230680322935210539402497827e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0.5L, 0x1.fp-1025L, -4.812118250596034474977589134243684231352e-1L, 4.819934639999230680322935210539402497827e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0.5L, -0x1.fp-1025L, 4.812118250596034474977589134243684231352e-1L, -4.819934639999230680322935210539402497827e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0.5L, -0x1.fp-1025L, -4.812118250596034474977589134243684231352e-1L, -4.819934639999230680322935210539402497827e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+  TEST_c_c (casinh, 0x1p-52L, 0x1p-52L, 2.220446049250313080847263336181677117148e-16L, 2.220446049250313080847263336181604132852e-16L);
+  TEST_c_c (casinh, 0x1p-52L, -0x1p-52L, 2.220446049250313080847263336181677117148e-16L, -2.220446049250313080847263336181604132852e-16L);
+  TEST_c_c (casinh, -0x1p-52L, 0x1p-52L, -2.220446049250313080847263336181677117148e-16L, 2.220446049250313080847263336181604132852e-16L);
+  TEST_c_c (casinh, -0x1p-52L, -0x1p-52L, -2.220446049250313080847263336181677117148e-16L, -2.220446049250313080847263336181604132852e-16L);
+#ifndef TEST_FLOAT
+  TEST_c_c (casinh, 0x1.fp-1025L, 0x1p-52L, 5.388850751072128349671657362289548938458e-309L, 2.220446049250313080847263336181658871074e-16L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0x1.fp-1025L, -0x1p-52L, 5.388850751072128349671657362289548938458e-309L, -2.220446049250313080847263336181658871074e-16L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x1.fp-1025L, 0x1p-52L, -5.388850751072128349671657362289548938458e-309L, 2.220446049250313080847263336181658871074e-16L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x1.fp-1025L, -0x1p-52L, -5.388850751072128349671657362289548938458e-309L, -2.220446049250313080847263336181658871074e-16L, UNDERFLOW_EXCEPTION_DOUBLE);
+  /* Bug 15319: underflow exception may be missing.  */
+  TEST_c_c (casinh, 0x1p-52L, 0x1.fp-1025L, 2.220446049250313080847263336181622378926e-16L, 5.388850751072128349671657362289283247603e-309L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casinh, -0x1p-52L, 0x1.fp-1025L, -2.220446049250313080847263336181622378926e-16L, 5.388850751072128349671657362289283247603e-309L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casinh, 0x1p-52L, -0x1.fp-1025L, 2.220446049250313080847263336181622378926e-16L, -5.388850751072128349671657362289283247603e-309L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casinh, -0x1p-52L, -0x1.fp-1025L, -2.220446049250313080847263336181622378926e-16L, -5.388850751072128349671657362289283247603e-309L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+#endif
+  TEST_c_c (casinh, 0.0L, 0x1p-52L, 0.0L, 2.220446049250313080847263336181658871074e-16L);
+  TEST_c_c (casinh, 0.0L, -0x1p-52L, 0.0L, -2.220446049250313080847263336181658871074e-16L);
+  TEST_c_c (casinh, -0.0L, 0x1p-52L, -0.0L, 2.220446049250313080847263336181658871074e-16L);
+  TEST_c_c (casinh, -0.0L, -0x1p-52L, -0.0L, -2.220446049250313080847263336181658871074e-16L);
+  TEST_c_c (casinh, 0x1p-52L, 0.0L, 2.220446049250313080847263336181622378926e-16L, 0.0L);
+  TEST_c_c (casinh, -0x1p-52L, 0.0L, -2.220446049250313080847263336181622378926e-16L, 0.0L);
+  TEST_c_c (casinh, 0x1p-52L, -0.0L, 2.220446049250313080847263336181622378926e-16L, -0.0L);
+  TEST_c_c (casinh, -0x1p-52L, -0.0L, -2.220446049250313080847263336181622378926e-16L, -0.0L);
+#ifndef TEST_FLOAT
+  TEST_c_c (casinh, 0x1.fp-1025L, 0x1.fp-1025L, 5.388850751072128349671657362289416093031e-309L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0x1.fp-1025L, -0x1.fp-1025L, 5.388850751072128349671657362289416093031e-309L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x1.fp-1025L, 0x1.fp-1025L, -5.388850751072128349671657362289416093031e-309L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x1.fp-1025L, -0x1.fp-1025L, -5.388850751072128349671657362289416093031e-309L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+  TEST_c_c (casinh, 0x1p-63L, 0x0.ffffffffffffffffp0L, 2.588578361325995866221775673638805081337e-10L, 1.570796326376055842114524927965556247908L);
+  TEST_c_c (casinh, 0x1p-63L, -0x0.ffffffffffffffffp0L, 2.588578361325995866221775673638805081337e-10L, -1.570796326376055842114524927965556247908L);
+  TEST_c_c (casinh, -0x1p-63L, 0x0.ffffffffffffffffp0L, -2.588578361325995866221775673638805081337e-10L, 1.570796326376055842114524927965556247908L);
+  TEST_c_c (casinh, -0x1p-63L, -0x0.ffffffffffffffffp0L, -2.588578361325995866221775673638805081337e-10L, -1.570796326376055842114524927965556247908L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffp0L, 0x1p-63L, 8.813735870195430251942769895627079569937e-1L, 7.666467083416870407402049869781566856442e-20L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffp0L, 0x1p-63L, -8.813735870195430251942769895627079569937e-1L, 7.666467083416870407402049869781566856442e-20L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffp0L, -0x1p-63L, 8.813735870195430251942769895627079569937e-1L, -7.666467083416870407402049869781566856442e-20L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffp0L, -0x1p-63L, -8.813735870195430251942769895627079569937e-1L, -7.666467083416870407402049869781566856442e-20L);
+# if LDBL_MIN_EXP <= -16381
+  TEST_c_c (casinh, 0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 2.472906068161537187835415298076415423459e-4923L, 1.570796326465624365239962068302568888898L);
+  TEST_c_c (casinh, 0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 2.472906068161537187835415298076415423459e-4923L, -1.570796326465624365239962068302568888898L);
+  TEST_c_c (casinh, -0x1.fp-16385L, 0x0.ffffffffffffffffp0L, -2.472906068161537187835415298076415423459e-4923L, 1.570796326465624365239962068302568888898L);
+  TEST_c_c (casinh, -0x1.fp-16385L, -0x0.ffffffffffffffffp0L, -2.472906068161537187835415298076415423459e-4923L, -1.570796326465624365239962068302568888898L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 8.813735870195430251942769895627079569917e-1L, 5.757683115456107044287327268904964422212e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffp0L, 0x1.fp-16385L, -8.813735870195430251942769895627079569917e-1L, 5.757683115456107044287327268904964422212e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffp0L, -0x1.fp-16385L, 8.813735870195430251942769895627079569917e-1L, -5.757683115456107044287327268904964422212e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffp0L, -0x1.fp-16385L, -8.813735870195430251942769895627079569917e-1L, -5.757683115456107044287327268904964422212e-4933L, UNDERFLOW_EXCEPTION);
+# endif
+  TEST_c_c (casinh, 0.0L, 0x0.ffffffffffffffffp0L, 0.0L, 1.570796326465624365239962068302568888898L);
+  TEST_c_c (casinh, 0.0L, -0x0.ffffffffffffffffp0L, 0.0L, -1.570796326465624365239962068302568888898L);
+  TEST_c_c (casinh, -0.0L, 0x0.ffffffffffffffffp0L, -0.0L, 1.570796326465624365239962068302568888898L);
+  TEST_c_c (casinh, -0.0L, -0x0.ffffffffffffffffp0L, -0.0L, -1.570796326465624365239962068302568888898L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffp0L, 0.0L, 8.813735870195430251942769895627079569917e-1L, 0.0L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffp0L, 0.0L, -8.813735870195430251942769895627079569917e-1L, 0.0L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffp0L, -0.0L, 8.813735870195430251942769895627079569917e-1L, -0.0L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffp0L, -0.0L, -8.813735870195430251942769895627079569917e-1L, -0.0L);
+#endif
+  TEST_c_c (casinh, 0x1p-63L, 0.5L, 1.251928832280966098829878787499365228659e-19L, 5.235987755982988730771072305465838140283e-1L);
+  TEST_c_c (casinh, 0x1p-63L, -0.5L, 1.251928832280966098829878787499365228659e-19L, -5.235987755982988730771072305465838140283e-1L);
+  TEST_c_c (casinh, -0x1p-63L, 0.5L, -1.251928832280966098829878787499365228659e-19L, 5.235987755982988730771072305465838140283e-1L);
+  TEST_c_c (casinh, -0x1p-63L, -0.5L, -1.251928832280966098829878787499365228659e-19L, -5.235987755982988730771072305465838140283e-1L);
+  TEST_c_c (casinh, 0.5L, 0x1p-63L, 4.812118250596034474977589134243684231373e-1L, 9.697399036122160144833087173623140436413e-20L);
+  TEST_c_c (casinh, -0.5L, 0x1p-63L, -4.812118250596034474977589134243684231373e-1L, 9.697399036122160144833087173623140436413e-20L);
+  TEST_c_c (casinh, 0.5L, -0x1p-63L, 4.812118250596034474977589134243684231373e-1L, -9.697399036122160144833087173623140436413e-20L);
+  TEST_c_c (casinh, -0.5L, -0x1p-63L, -4.812118250596034474977589134243684231373e-1L, -9.697399036122160144833087173623140436413e-20L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (casinh, 0x1.fp-16385L, 0.5L, 9.402257155670418112159334875199821342890e-4933L, 5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x1.fp-16385L, -0.5L, 9.402257155670418112159334875199821342890e-4933L, -5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1.fp-16385L, 0.5L, -9.402257155670418112159334875199821342890e-4933L, 5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1.fp-16385L, -0.5L, -9.402257155670418112159334875199821342890e-4933L, -5.235987755982988730771072305465838140329e-1L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0.5L, 0x1.fp-16385L, 4.812118250596034474977589134243684231352e-1L, 7.282957076134209141226696333885150260319e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0.5L, 0x1.fp-16385L, -4.812118250596034474977589134243684231352e-1L, 7.282957076134209141226696333885150260319e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0.5L, -0x1.fp-16385L, 4.812118250596034474977589134243684231352e-1L, -7.282957076134209141226696333885150260319e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0.5L, -0x1.fp-16385L, -4.812118250596034474977589134243684231352e-1L, -7.282957076134209141226696333885150260319e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+  TEST_c_c (casinh, 0x1p-63L, 0x1p-63L, 1.084202172485504434007452800869941711430e-19L, 1.084202172485504434007452800869941711422e-19L);
+  TEST_c_c (casinh, 0x1p-63L, -0x1p-63L, 1.084202172485504434007452800869941711430e-19L, -1.084202172485504434007452800869941711422e-19L);
+  TEST_c_c (casinh, -0x1p-63L, 0x1p-63L, -1.084202172485504434007452800869941711430e-19L, 1.084202172485504434007452800869941711422e-19L);
+  TEST_c_c (casinh, -0x1p-63L, -0x1p-63L, -1.084202172485504434007452800869941711430e-19L, -1.084202172485504434007452800869941711422e-19L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (casinh, 0x1.fp-16385L, 0x1p-63L, 8.142593549724601460479922838826119584465e-4933L, 1.084202172485504434007452800869941711428e-19L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x1.fp-16385L, -0x1p-63L, 8.142593549724601460479922838826119584465e-4933L, -1.084202172485504434007452800869941711428e-19L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1.fp-16385L, 0x1p-63L, -8.142593549724601460479922838826119584465e-4933L, 1.084202172485504434007452800869941711428e-19L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1.fp-16385L, -0x1p-63L, -8.142593549724601460479922838826119584465e-4933L, -1.084202172485504434007452800869941711428e-19L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x1p-63L, 0x1.fp-16385L, 1.084202172485504434007452800869941711424e-19L, 8.142593549724601460479922838826119584369e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1p-63L, 0x1.fp-16385L, -1.084202172485504434007452800869941711424e-19L, 8.142593549724601460479922838826119584369e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x1p-63L, -0x1.fp-16385L, 1.084202172485504434007452800869941711424e-19L, -8.142593549724601460479922838826119584369e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1p-63L, -0x1.fp-16385L, -1.084202172485504434007452800869941711424e-19L, -8.142593549724601460479922838826119584369e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+  TEST_c_c (casinh, 0.0L, 0x1p-63L, 0.0L, 1.084202172485504434007452800869941711428e-19L);
+  TEST_c_c (casinh, 0.0L, -0x1p-63L, 0.0L, -1.084202172485504434007452800869941711428e-19L);
+  TEST_c_c (casinh, -0.0L, 0x1p-63L, -0.0L, 1.084202172485504434007452800869941711428e-19L);
+  TEST_c_c (casinh, -0.0L, -0x1p-63L, -0.0L, -1.084202172485504434007452800869941711428e-19L);
+  TEST_c_c (casinh, 0x1p-63L, 0.0L, 1.084202172485504434007452800869941711424e-19L, 0.0L);
+  TEST_c_c (casinh, -0x1p-63L, 0.0L, -1.084202172485504434007452800869941711424e-19L, 0.0L);
+  TEST_c_c (casinh, 0x1p-63L, -0.0L, 1.084202172485504434007452800869941711424e-19L, -0.0L);
+  TEST_c_c (casinh, -0x1p-63L, -0.0L, -1.084202172485504434007452800869941711424e-19L, -0.0L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (casinh, 0x1.fp-16385L, 0x1.fp-16385L, 8.142593549724601460479922838826119584417e-4933L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x1.fp-16385L, -0x1.fp-16385L, 8.142593549724601460479922838826119584417e-4933L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1.fp-16385L, 0x1.fp-16385L, -8.142593549724601460479922838826119584417e-4933L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1.fp-16385L, -0x1.fp-16385L, -8.142593549724601460479922838826119584417e-4933L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 106
+  TEST_c_c (casinh, 0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, 1.234330349600789959989661887846005659983e-16L, 1.570796326794896419512475791677915736035L);
+  TEST_c_c (casinh, 0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, 1.234330349600789959989661887846005659983e-16L, -1.570796326794896419512475791677915736035L);
+  TEST_c_c (casinh, -0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, -1.234330349600789959989661887846005659983e-16L, 1.570796326794896419512475791677915736035L);
+  TEST_c_c (casinh, -0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, -1.234330349600789959989661887846005659983e-16L, -1.570796326794896419512475791677915736035L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, 8.813735870195430252326093249797835932642e-1L, 1.743152798421049375791483240187377443526e-32L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, -8.813735870195430252326093249797835932642e-1L, 1.743152798421049375791483240187377443526e-32L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, 8.813735870195430252326093249797835932642e-1L, -1.743152798421049375791483240187377443526e-32L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, -8.813735870195430252326093249797835932642e-1L, -1.743152798421049375791483240187377443526e-32L);
+  TEST_c_c (casinh, 0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, 3.432186888910770473784103112009399360940e-293L, 1.570796326794896462222075823262245502760L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casinh, 0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, 3.432186888910770473784103112009399360940e-293L, -1.570796326794896462222075823262245502760L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casinh, -0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, -3.432186888910770473784103112009399360940e-293L, 1.570796326794896462222075823262245502760L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casinh, -0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, -3.432186888910770473784103112009399360940e-293L, -1.570796326794896462222075823262245502760L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, 8.813735870195430252326093249797835932642e-1L, 3.810492908885321743133304375216641110205e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, -8.813735870195430252326093249797835932642e-1L, 3.810492908885321743133304375216641110205e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, 8.813735870195430252326093249797835932642e-1L, -3.810492908885321743133304375216641110205e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, -8.813735870195430252326093249797835932642e-1L, -3.810492908885321743133304375216641110205e-309L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0.0L, 0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 1.570796326794896462222075823262245502760L);
+  TEST_c_c (casinh, 0.0L, -0x0.ffffffffffffffffffffffffffcp0L, 0.0L, -1.570796326794896462222075823262245502760L);
+  TEST_c_c (casinh, -0.0L, 0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 1.570796326794896462222075823262245502760L);
+  TEST_c_c (casinh, -0.0L, -0x0.ffffffffffffffffffffffffffcp0L, -0.0L, -1.570796326794896462222075823262245502760L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 8.813735870195430252326093249797835932642e-1L, 0.0L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffcp0L, 0.0L, -8.813735870195430252326093249797835932642e-1L, 0.0L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 8.813735870195430252326093249797835932642e-1L, -0.0L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffcp0L, -0.0L, -8.813735870195430252326093249797835932642e-1L, -0.0L);
+#endif
+  TEST_c_c (casinh, 0x1p-105L, 0.5L, 2.846556599890768890940941645338546615370e-32L, 5.235987755982988730771072305465838140329e-1L);
+  TEST_c_c (casinh, 0x1p-105L, -0.5L, 2.846556599890768890940941645338546615370e-32L, -5.235987755982988730771072305465838140329e-1L);
+  TEST_c_c (casinh, -0x1p-105L, 0.5L, -2.846556599890768890940941645338546615370e-32L, 5.235987755982988730771072305465838140329e-1L);
+  TEST_c_c (casinh, -0x1p-105L, -0.5L, -2.846556599890768890940941645338546615370e-32L, -5.235987755982988730771072305465838140329e-1L);
+  TEST_c_c (casinh, 0.5L, 0x1p-105L, 4.812118250596034474977589134243684231352e-1L, 2.204933261082751447436996198490110245167e-32L);
+  TEST_c_c (casinh, -0.5L, 0x1p-105L, -4.812118250596034474977589134243684231352e-1L, 2.204933261082751447436996198490110245167e-32L);
+  TEST_c_c (casinh, 0.5L, -0x1p-105L, 4.812118250596034474977589134243684231352e-1L, -2.204933261082751447436996198490110245167e-32L);
+  TEST_c_c (casinh, -0.5L, -0x1p-105L, -4.812118250596034474977589134243684231352e-1L, -2.204933261082751447436996198490110245167e-32L);
+  TEST_c_c (casinh, 0x1p-105L, 0x1p-105L, 2.465190328815661891911651766508706967729e-32L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casinh, 0x1p-105L, -0x1p-105L, 2.465190328815661891911651766508706967729e-32L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casinh, -0x1p-105L, 0x1p-105L, -2.465190328815661891911651766508706967729e-32L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casinh, -0x1p-105L, -0x1p-105L, -2.465190328815661891911651766508706967729e-32L, -2.465190328815661891911651766508706967729e-32L);
+#ifndef TEST_FLOAT
+  TEST_c_c (casinh, 0x1.fp-1025L, 0x1p-105L, 5.388850751072128349671657362289416093031e-309L, 2.465190328815661891911651766508706967729e-32L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, 0x1.fp-1025L, -0x1p-105L, 5.388850751072128349671657362289416093031e-309L, -2.465190328815661891911651766508706967729e-32L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x1.fp-1025L, 0x1p-105L, -5.388850751072128349671657362289416093031e-309L, 2.465190328815661891911651766508706967729e-32L, UNDERFLOW_EXCEPTION_DOUBLE);
+  TEST_c_c (casinh, -0x1.fp-1025L, -0x1p-105L, -5.388850751072128349671657362289416093031e-309L, -2.465190328815661891911651766508706967729e-32L, UNDERFLOW_EXCEPTION_DOUBLE);
+  /* Bug 15319: underflow exception may be missing.  */
+  TEST_c_c (casinh, 0x1p-105L, 0x1.fp-1025L, 2.465190328815661891911651766508706967729e-32L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casinh, -0x1p-105L, 0x1.fp-1025L, -2.465190328815661891911651766508706967729e-32L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casinh, 0x1p-105L, -0x1.fp-1025L, 2.465190328815661891911651766508706967729e-32L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+  TEST_c_c (casinh, -0x1p-105L, -0x1.fp-1025L, -2.465190328815661891911651766508706967729e-32L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_OK_DOUBLE);
+#endif
+  TEST_c_c (casinh, 0.0L, 0x1p-105L, 0.0L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casinh, 0.0L, -0x1p-105L, 0.0L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casinh, -0.0L, 0x1p-105L, -0.0L, 2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casinh, -0.0L, -0x1p-105L, -0.0L, -2.465190328815661891911651766508706967729e-32L);
+  TEST_c_c (casinh, 0x1p-105L, 0.0L, 2.465190328815661891911651766508706967729e-32L, 0.0L);
+  TEST_c_c (casinh, -0x1p-105L, 0.0L, -2.465190328815661891911651766508706967729e-32L, 0.0L);
+  TEST_c_c (casinh, 0x1p-105L, -0.0L, 2.465190328815661891911651766508706967729e-32L, -0.0L);
+  TEST_c_c (casinh, -0x1p-105L, -0.0L, -2.465190328815661891911651766508706967729e-32L, -0.0L);
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 113
+  TEST_c_c (casinh, 0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.091004200533850618345330909857103457781e-17L, 1.570796326794896601578502908312986698624L);
+  TEST_c_c (casinh, 0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.091004200533850618345330909857103457781e-17L, -1.570796326794896601578502908312986698624L);
+  TEST_c_c (casinh, -0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, -1.091004200533850618345330909857103457781e-17L, 1.570796326794896601578502908312986698624L);
+  TEST_c_c (casinh, -0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, -1.091004200533850618345330909857103457781e-17L, -1.570796326794896601578502908312986698624L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, 8.813735870195430252326093249797922409363e-1L, 1.361838123766444824837096281396380300349e-34L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, -8.813735870195430252326093249797922409363e-1L, 1.361838123766444824837096281396380300349e-34L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, 8.813735870195430252326093249797922409363e-1L, -1.361838123766444824837096281396380300349e-34L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, -8.813735870195430252326093249797922409363e-1L, -1.361838123766444824837096281396380300349e-34L);
+  TEST_c_c (casinh, 0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, 5.867357004219059108790368268900490184505e-4916L, 1.570796326794896605353533883825294686803L);
+  TEST_c_c (casinh, 0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, 5.867357004219059108790368268900490184505e-4916L, -1.570796326794896605353533883825294686803L);
+  TEST_c_c (casinh, -0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, -5.867357004219059108790368268900490184505e-4916L, 1.570796326794896605353533883825294686803L);
+  TEST_c_c (casinh, -0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, -5.867357004219059108790368268900490184505e-4916L, -1.570796326794896605353533883825294686803L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, 8.813735870195430252326093249797922409363e-1L, 5.757683115456107044131264955348449231681e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, -8.813735870195430252326093249797922409363e-1L, 5.757683115456107044131264955348449231681e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, 8.813735870195430252326093249797922409363e-1L, -5.757683115456107044131264955348449231681e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, -8.813735870195430252326093249797922409363e-1L, -5.757683115456107044131264955348449231681e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 1.570796326794896605353533883825294686803L);
+  TEST_c_c (casinh, 0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, -1.570796326794896605353533883825294686803L);
+  TEST_c_c (casinh, -0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 1.570796326794896605353533883825294686803L);
+  TEST_c_c (casinh, -0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, -1.570796326794896605353533883825294686803L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 8.813735870195430252326093249797922409363e-1L, 0.0L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, -8.813735870195430252326093249797922409363e-1L, 0.0L);
+  TEST_c_c (casinh, 0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 8.813735870195430252326093249797922409363e-1L, -0.0L);
+  TEST_c_c (casinh, -0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, -8.813735870195430252326093249797922409363e-1L, -0.0L);
+#endif
+  TEST_c_c (casinh, 0x1p-112L, 0.5L, 2.223872343664663196047610660420739543258e-34L, 5.235987755982988730771072305465838140329e-1L);
+  TEST_c_c (casinh, 0x1p-112L, -0.5L, 2.223872343664663196047610660420739543258e-34L, -5.235987755982988730771072305465838140329e-1L);
+  TEST_c_c (casinh, -0x1p-112L, 0.5L, -2.223872343664663196047610660420739543258e-34L, 5.235987755982988730771072305465838140329e-1L);
+  TEST_c_c (casinh, -0x1p-112L, -0.5L, -2.223872343664663196047610660420739543258e-34L, -5.235987755982988730771072305465838140329e-1L);
+  TEST_c_c (casinh, 0.5L, 0x1p-112L, 4.812118250596034474977589134243684231352e-1L, 1.722604110220899568310153280070398629037e-34L);
+  TEST_c_c (casinh, -0.5L, 0x1p-112L, -4.812118250596034474977589134243684231352e-1L, 1.722604110220899568310153280070398629037e-34L);
+  TEST_c_c (casinh, 0.5L, -0x1p-112L, 4.812118250596034474977589134243684231352e-1L, -1.722604110220899568310153280070398629037e-34L);
+  TEST_c_c (casinh, -0.5L, -0x1p-112L, -4.812118250596034474977589134243684231352e-1L, -1.722604110220899568310153280070398629037e-34L);
+  TEST_c_c (casinh, 0x1p-112L, 0x1p-112L, 1.925929944387235853055977942584927318538e-34L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casinh, 0x1p-112L, -0x1p-112L, 1.925929944387235853055977942584927318538e-34L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casinh, -0x1p-112L, 0x1p-112L, -1.925929944387235853055977942584927318538e-34L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casinh, -0x1p-112L, -0x1p-112L, -1.925929944387235853055977942584927318538e-34L, -1.925929944387235853055977942584927318538e-34L);
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+  TEST_c_c (casinh, 0x1.fp-16385L, 0x1p-112L, 8.142593549724601460479922838826119584417e-4933L, 1.925929944387235853055977942584927318538e-34L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x1.fp-16385L, -0x1p-112L, 8.142593549724601460479922838826119584417e-4933L, -1.925929944387235853055977942584927318538e-34L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1.fp-16385L, 0x1p-112L, -8.142593549724601460479922838826119584417e-4933L, 1.925929944387235853055977942584927318538e-34L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1.fp-16385L, -0x1p-112L, -8.142593549724601460479922838826119584417e-4933L, -1.925929944387235853055977942584927318538e-34L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x1p-112L, 0x1.fp-16385L, 1.925929944387235853055977942584927318538e-34L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1p-112L, 0x1.fp-16385L, -1.925929944387235853055977942584927318538e-34L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, 0x1p-112L, -0x1.fp-16385L, 1.925929944387235853055977942584927318538e-34L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+  TEST_c_c (casinh, -0x1p-112L, -0x1.fp-16385L, -1.925929944387235853055977942584927318538e-34L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION);
+#endif
+  TEST_c_c (casinh, 0.0L, 0x1p-112L, 0.0L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casinh, 0.0L, -0x1p-112L, 0.0L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casinh, -0.0L, 0x1p-112L, -0.0L, 1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casinh, -0.0L, -0x1p-112L, -0.0L, -1.925929944387235853055977942584927318538e-34L);
+  TEST_c_c (casinh, 0x1p-112L, 0.0L, 1.925929944387235853055977942584927318538e-34L, 0.0L);
+  TEST_c_c (casinh, -0x1p-112L, 0.0L, -1.925929944387235853055977942584927318538e-34L, 0.0L);
+  TEST_c_c (casinh, 0x1p-112L, -0.0L, 1.925929944387235853055977942584927318538e-34L, -0.0L);
+  TEST_c_c (casinh, -0x1p-112L, -0.0L, -1.925929944387235853055977942584927318538e-34L, -0.0L);
+
   TEST_c_c (casinh, 0.75L, 1.25L, 1.03171853444778027336364058631006594L, 0.911738290968487636358489564316731207L);
   TEST_c_c (casinh, -2, -3, -1.9686379257930962917886650952454982L, -0.96465850440760279204541105949953237L);