Fix casinh inaccuracy near i, imaginary part > 1 (bug 15307).

4 files changed, 491 insertions, 0 deletions

diff --git a/math/k_casinh.c b/math/k_casinh.c
index 45845e2164..4cb232a17a 100644
--- a/math/k_casinh.c
+++ b/math/k_casinh.c
@@ -77,6 +77,38 @@ __kernel_casinh (__complex__ double x, int adj)
       else
 	__imag__ res = __ieee754_atan2 (s, rx);
     }
+  else if (ix > 1.0 && ix < 1.5 && rx < 0.5)
+    {
+      if (rx < DBL_EPSILON * DBL_EPSILON)
+	{
+	  double ix2m1 = (ix + 1.0) * (ix - 1.0);
+	  double s = __ieee754_sqrt (ix2m1);
+
+	  __real__ res = __log1p (2.0 * (ix2m1 + ix * s)) / 2.0;
+	  if (adj)
+	    __imag__ res = __ieee754_atan2 (rx, __copysign (s, __imag__ x));
+	  else
+	    __imag__ res = __ieee754_atan2 (s, rx);
+	}
+      else
+	{
+	  double ix2m1 = (ix + 1.0) * (ix - 1.0);
+	  double rx2 = rx * rx;
+	  double f = rx2 * (2.0 + rx2 + 2.0 * ix * ix);
+	  double d = __ieee754_sqrt (ix2m1 * ix2m1 + f);
+	  double dp = d + ix2m1;
+	  double dm = f / dp;
+	  double r1 = __ieee754_sqrt ((dm + rx2) / 2.0);
+	  double r2 = rx * ix / r1;
+
+	  __real__ res = __log1p (rx2 + dp + 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 if (ix == 1.0 && rx < 0.5)
     {
       if (rx < DBL_EPSILON / 8.0)
diff --git a/math/k_casinhf.c b/math/k_casinhf.c
index 4d1a92f813..b368313390 100644
--- a/math/k_casinhf.c
+++ b/math/k_casinhf.c
@@ -77,6 +77,39 @@ __kernel_casinhf (__complex__ float x, int adj)
       else
 	__imag__ res = __ieee754_atan2f (s, rx);
     }
+  else if (ix > 1.0f && ix < 1.5f && rx < 0.5f)
+    {
+      if (rx < FLT_EPSILON * FLT_EPSILON)
+	{
+	  float ix2m1 = (ix + 1.0f) * (ix - 1.0f);
+	  float s = __ieee754_sqrtf (ix2m1);
+
+	  __real__ res = __log1pf (2.0f * (ix2m1 + ix * s)) / 2.0f;
+	  if (adj)
+	    __imag__ res = __ieee754_atan2f (rx, __copysignf (s, __imag__ x));
+	  else
+	    __imag__ res = __ieee754_atan2f (s, rx);
+	}
+      else
+	{
+	  float ix2m1 = (ix + 1.0f) * (ix - 1.0f);
+	  float rx2 = rx * rx;
+	  float f = rx2 * (2.0f + rx2 + 2.0f * ix * ix);
+	  float d = __ieee754_sqrtf (ix2m1 * ix2m1 + f);
+	  float dp = d + ix2m1;
+	  float dm = f / dp;
+	  float r1 = __ieee754_sqrtf ((dm + rx2) / 2.0f);
+	  float r2 = rx * ix / r1;
+
+	  __real__ res
+	    = __log1pf (rx2 + dp + 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 if (ix == 1.0f && rx < 0.5f)
     {
       if (rx < FLT_EPSILON / 8.0f)
diff --git a/math/k_casinhl.c b/math/k_casinhl.c
index eb090ec3ce..8e5bbd4385 100644
--- a/math/k_casinhl.c
+++ b/math/k_casinhl.c
@@ -84,6 +84,39 @@ __kernel_casinhl (__complex__ long double x, int adj)
       else
 	__imag__ res = __ieee754_atan2l (s, rx);
     }
+  else if (ix > 1.0L && ix < 1.5L && rx < 0.5L)
+    {
+      if (rx < LDBL_EPSILON * LDBL_EPSILON)
+	{
+	  long double ix2m1 = (ix + 1.0L) * (ix - 1.0L);
+	  long double s = __ieee754_sqrtl (ix2m1);
+
+	  __real__ res = __log1pl (2.0L * (ix2m1 + ix * s)) / 2.0L;
+	  if (adj)
+	    __imag__ res = __ieee754_atan2l (rx, __copysignl (s, __imag__ x));
+	  else
+	    __imag__ res = __ieee754_atan2l (s, rx);
+	}
+      else
+	{
+	  long double ix2m1 = (ix + 1.0L) * (ix - 1.0L);
+	  long double rx2 = rx * rx;
+	  long double f = rx2 * (2.0L + rx2 + 2.0L * ix * ix);
+	  long double d = __ieee754_sqrtl (ix2m1 * ix2m1 + f);
+	  long double dp = d + ix2m1;
+	  long double dm = f / dp;
+	  long double r1 = __ieee754_sqrtl ((dm + rx2) / 2.0L);
+	  long double r2 = rx * ix / r1;
+
+	  __real__ res
+	    = __log1pl (rx2 + dp + 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 if (ix == 1.0L && rx < 0.5L)
     {
       if (rx < LDBL_EPSILON / 8.0L)
diff --git a/math/libm-test.inc b/math/libm-test.inc
index 85ae23f838..0ea456bb94 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -1605,6 +1605,137 @@ cacos_test (void)
   TEST_c_c (cacos, -1.0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 9.023632056840860275214893047597614177639e-2467L);
 #endif
 
+  TEST_c_c (cacos, 0x1p-23L, 0x1.000002p0L, 1.570796242501204621739026081991856762292L, -8.813736713132400470205730751186547909968e-1L)
+  TEST_c_c (cacos, 0x1p-23L, -0x1.000002p0L, 1.570796242501204621739026081991856762292L, 8.813736713132400470205730751186547909968e-1L)
+  TEST_c_c (cacos, -0x1p-23L, 0x1.000002p0L, 1.570796411088588616723617301287646121905L, -8.813736713132400470205730751186547909968e-1L)
+  TEST_c_c (cacos, -0x1p-23L, -0x1.000002p0L, 1.570796411088588616723617301287646121905L, 8.813736713132400470205730751186547909968e-1L)
+  TEST_c_c (cacos, 0x1.000002p0L, 0x1p-23L, 2.222118384408546368406374049167636760903e-4L, -5.364668491573609633134147164031476452679e-4L)
+  TEST_c_c (cacos, -0x1.000002p0L, 0x1p-23L, 3.141370441751352383825802745874586120521L, -5.364668491573609633134147164031476452679e-4L)
+  TEST_c_c (cacos, 0x1.000002p0L, -0x1p-23L, 2.222118384408546368406374049167636760903e-4L, 5.364668491573609633134147164031476452679e-4L)
+  TEST_c_c (cacos, -0x1.000002p0L, -0x1p-23L, 3.141370441751352383825802745874586120521L, 5.364668491573609633134147164031476452679e-4L)
+  TEST_c_c (cacos, 0x1.fp-129L, 0x1.000002p0L, 1.570796326794896619231321691639751442097L, -8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (cacos, 0x1.fp-129L, -0x1.000002p0L, 1.570796326794896619231321691639751442097L, 8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (cacos, -0x1.fp-129L, 0x1.000002p0L, 1.570796326794896619231321691639751442101L, -8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (cacos, -0x1.fp-129L, -0x1.000002p0L, 1.570796326794896619231321691639751442101L, 8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (cacos, 0x1.000002p0L, 0x1.fp-129L, 5.830451806317544230969669308596361881467e-36L, -4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (cacos, -0x1.000002p0L, 0x1.fp-129L, 3.141592653589793238462643383279502878367L, -4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (cacos, 0x1.000002p0L, -0x1.fp-129L, 5.830451806317544230969669308596361881467e-36L, 4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (cacos, -0x1.000002p0L, -0x1.fp-129L, 3.141592653589793238462643383279502878367L, 4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (cacos, 0.0L, 0x1.000002p0L, 1.570796326794896619231321691639751442099L, -8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (cacos, 0.0L, -0x1.000002p0L, 1.570796326794896619231321691639751442099L, 8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (cacos, -0.0L, 0x1.000002p0L, 1.570796326794896619231321691639751442099L, -8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (cacos, -0.0L, -0x1.000002p0L, 1.570796326794896619231321691639751442099L, 8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (cacos, 0x1.000002p0L, 0.0L, 0.0L, -4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (cacos, -0x1.000002p0L, 0.0L, 3.141592653589793238462643383279502884197L, -4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (cacos, 0x1.000002p0L, -0.0L, 0.0L, 4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (cacos, -0x1.000002p0L, -0.0L, 3.141592653589793238462643383279502884197L, 4.882812451493617206486388134172712975070e-4L)
+#ifndef TEST_FLOAT
+  TEST_c_c (cacos, 0x1p-52L, 0x1.0000000000001p0L, 1.570796326794896462222075823262262934288L, -8.813735870195431822418551933572982483664e-1L)
+  TEST_c_c (cacos, 0x1p-52L, -0x1.0000000000001p0L, 1.570796326794896462222075823262262934288L, 8.813735870195431822418551933572982483664e-1L)
+  TEST_c_c (cacos, -0x1p-52L, 0x1.0000000000001p0L, 1.570796326794896776240567560017239949909L, -8.813735870195431822418551933572982483664e-1L)
+  TEST_c_c (cacos, -0x1p-52L, -0x1.0000000000001p0L, 1.570796326794896776240567560017239949909L, 8.813735870195431822418551933572982483664e-1L)
+  TEST_c_c (cacos, 0x1.0000000000001p0L, 0x1p-52L, 9.590301705980041385828904092662391018164e-9L, -2.315303644582684770975188768022139415020e-8L)
+  TEST_c_c (cacos, -0x1.0000000000001p0L, 0x1p-52L, 3.141592643999491532482601997450598791535L, -2.315303644582684770975188768022139415020e-8L)
+  TEST_c_c (cacos, 0x1.0000000000001p0L, -0x1p-52L, 9.590301705980041385828904092662391018164e-9L, 2.315303644582684770975188768022139415020e-8L)
+  TEST_c_c (cacos, -0x1.0000000000001p0L, -0x1p-52L, 3.141592643999491532482601997450598791535L, 2.315303644582684770975188768022139415020e-8L)
+  TEST_c_c (cacos, 0x1.fp-1025L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (cacos, 0x1.fp-1025L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (cacos, -0x1.fp-1025L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (cacos, -0x1.fp-1025L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (cacos, 0x1.0000000000001p0L, 0x1.fp-1025L, 2.557178503953494342609835913586108008322e-301L, -2.107342425544701550354780375182800088393e-8L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM)
+  TEST_c_c (cacos, -0x1.0000000000001p0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (cacos, 0x1.0000000000001p0L, -0x1.fp-1025L, 2.557178503953494342609835913586108008322e-301L, 2.107342425544701550354780375182800088393e-8L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM)
+  TEST_c_c (cacos, -0x1.0000000000001p0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (cacos, 0.0L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (cacos, 0.0L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (cacos, -0.0L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (cacos, -0.0L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (cacos, 0x1.0000000000001p0L, 0.0L, 0.0L, -2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (cacos, -0x1.0000000000001p0L, 0.0L, 3.141592653589793238462643383279502884197L, -2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (cacos, 0x1.0000000000001p0L, -0.0L, 0.0L, 2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (cacos, -0x1.0000000000001p0L, -0.0L, 3.141592653589793238462643383279502884197L, 2.107342425544701550354780375182800088393e-8L)
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+  TEST_c_c (cacos, 0x1p-63L, 0x1.0000000000000002p0L, 1.570796326794896619154657020805582738031L, -8.813735870195430253092739958139610131001e-1L)
+  TEST_c_c (cacos, 0x1p-63L, -0x1.0000000000000002p0L, 1.570796326794896619154657020805582738031L, 8.813735870195430253092739958139610131001e-1L)
+  TEST_c_c (cacos, -0x1p-63L, 0x1.0000000000000002p0L, 1.570796326794896619307986362473920146166L, -8.813735870195430253092739958139610131001e-1L)
+  TEST_c_c (cacos, -0x1p-63L, -0x1.0000000000000002p0L, 1.570796326794896619307986362473920146166L, 8.813735870195430253092739958139610131001e-1L)
+  TEST_c_c (cacos, 0x1.0000000000000002p0L, 0x1p-63L, 2.119177303101063432592523199680782317447e-10L, -5.116146586219826555037807251857670783420e-10L)
+  TEST_c_c (cacos, -0x1.0000000000000002p0L, 0x1p-63L, 3.141592653377875508152537040020250564229L, -5.116146586219826555037807251857670783420e-10L)
+  TEST_c_c (cacos, 0x1.0000000000000002p0L, -0x1p-63L, 2.119177303101063432592523199680782317447e-10L, 5.116146586219826555037807251857670783420e-10L)
+  TEST_c_c (cacos, -0x1.0000000000000002p0L, -0x1p-63L, 3.141592653377875508152537040020250564229L, 5.116146586219826555037807251857670783420e-10L)
+# if LDBL_MIN_EXP <= -16381
+  TEST_c_c (cacos, 0x1.fp-16385L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (cacos, 0x1.fp-16385L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (cacos, -0x1.fp-16385L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (cacos, -0x1.fp-16385L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (cacos, 0x1.0000000000000002p0L, 0x1.fp-16385L, 1.748608650034385653922359120438227480943e-4923L, -4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (cacos, -0x1.0000000000000002p0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (cacos, 0x1.0000000000000002p0L, -0x1.fp-16385L, 1.748608650034385653922359120438227480943e-4923L, 4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (cacos, -0x1.0000000000000002p0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 4.656612873077392578082927418388212703712e-10L)
+# endif
+  TEST_c_c (cacos, 0.0L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (cacos, 0.0L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (cacos, -0.0L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (cacos, -0.0L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (cacos, 0x1.0000000000000002p0L, 0.0L, 0.0L, -4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (cacos, -0x1.0000000000000002p0L, 0.0L, 3.141592653589793238462643383279502884197L, -4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (cacos, 0x1.0000000000000002p0L, -0.0L, 0.0L, 4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (cacos, -0x1.0000000000000002p0L, -0.0L, 3.141592653589793238462643383279502884197L, 4.656612873077392578082927418388212703712e-10L)
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 106
+  TEST_c_c (cacos, 0x1p-106L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639742726335L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, 0x1p-106L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639742726335L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, -0x1p-106L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639760157863L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, -0x1p-106L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639760157863L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0x1p-106L, 5.394221422390606848017034778914096659726e-17L, -2.285028863093221674154232933662774454211e-16L)
+  TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0x1p-106L, 3.141592653589793184520429159373434404027L, -2.285028863093221674154232933662774454211e-16L)
+  TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0x1p-106L, 5.394221422390606848017034778914096659726e-17L, 2.285028863093221674154232933662774454211e-16L)
+  TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0x1p-106L, 3.141592653589793184520429159373434404027L, 2.285028863093221674154232933662774454211e-16L)
+  TEST_c_c (cacos, 0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, 0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, -0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, -0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 2.426922623448365473354662093431821897807e-293L, -2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 2.426922623448365473354662093431821897807e-293L, 2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (cacos, 0.0L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, 0.0L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, -0.0L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, -0.0L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0.0L, 0.0L, -2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0.0L, 3.141592653589793238462643383279502884197L, -2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0.0L, 0.0L, 2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0.0L, 3.141592653589793238462643383279502884197L, 2.220446049250313080847263336181636063482e-16L)
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 113
+  TEST_c_c (cacos, 0x1p-113L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751374007L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, 0x1p-113L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751374007L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, -0x1p-113L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751510190L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, -0x1p-113L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751510190L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0x1p-113L, 4.767863183742677481693563511435642755521e-18L, -2.019699255375255198156433710951064632386e-17L)
+  TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0x1p-113L, 3.141592653589793233694780199536825402504L, -2.019699255375255198156433710951064632386e-17L)
+  TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0x1p-113L, 4.767863183742677481693563511435642755521e-18L, 2.019699255375255198156433710951064632386e-17L)
+  TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0x1p-113L, 3.141592653589793233694780199536825402504L, 2.019699255375255198156433710951064632386e-17L)
+  TEST_c_c (cacos, 0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, 0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, -0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, -0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 4.148847925325683229178506116378864361396e-4916L, -1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 4.148847925325683229178506116378864361396e-4916L, 1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (cacos, 0.0L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, 0.0L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, -0.0L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, -0.0L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0.0L, 0.0L, -1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0.0L, 3.141592653589793238462643383279502884197L, -1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0.0L, 0.0L, 1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0.0L, 3.141592653589793238462643383279502884197L, 1.962615573354718824241727964954454332780e-17L)
+#endif
+
   TEST_c_c (cacos, 0.75L, 1.25L, 1.11752014915610270578240049553777969L, -1.13239363160530819522266333696834467L);
   TEST_c_c (cacos, -2, -3, 2.1414491111159960199416055713254211L, 1.9833870299165354323470769028940395L);
 
@@ -2001,6 +2132,137 @@ casin_test (void)
   TEST_c_c (casin, -1.0L, -0x1.fp-16385L, -1.570796326794896619231321691639751442099L, -9.023632056840860275214893047597614177639e-2467L);
 #endif
 
+  TEST_c_c (casin, 0x1p-23L, 0x1.000002p0L, 8.429369199749229560964789467980644296420e-8L, 8.813736713132400470205730751186547909968e-1L)
+  TEST_c_c (casin, 0x1p-23L, -0x1.000002p0L, 8.429369199749229560964789467980644296420e-8L, -8.813736713132400470205730751186547909968e-1L)
+  TEST_c_c (casin, -0x1p-23L, 0x1.000002p0L, -8.429369199749229560964789467980644296420e-8L, 8.813736713132400470205730751186547909968e-1L)
+  TEST_c_c (casin, -0x1p-23L, -0x1.000002p0L, -8.429369199749229560964789467980644296420e-8L, -8.813736713132400470205730751186547909968e-1L)
+  TEST_c_c (casin, 0x1.000002p0L, 0x1p-23L, 1.570574114956455764594481054234834678422L, 5.364668491573609633134147164031476452679e-4L)
+  TEST_c_c (casin, -0x1.000002p0L, 0x1p-23L, -1.570574114956455764594481054234834678422L, 5.364668491573609633134147164031476452679e-4L)
+  TEST_c_c (casin, 0x1.000002p0L, -0x1p-23L, 1.570574114956455764594481054234834678422L, -5.364668491573609633134147164031476452679e-4L)
+  TEST_c_c (casin, -0x1.000002p0L, -0x1p-23L, -1.570574114956455764594481054234834678422L, -5.364668491573609633134147164031476452679e-4L)
+  TEST_c_c (casin, 0x1.fp-129L, 0x1.000002p0L, 2.013062444707472738895109955455676357057e-39L, 8.813736713132375348727889167749389235161e-1L, UNDERFLOW_EXCEPTION_FLOAT)
+  TEST_c_c (casin, 0x1.fp-129L, -0x1.000002p0L, 2.013062444707472738895109955455676357057e-39L, -8.813736713132375348727889167749389235161e-1L, UNDERFLOW_EXCEPTION_FLOAT)
+  TEST_c_c (casin, -0x1.fp-129L, 0x1.000002p0L, -2.013062444707472738895109955455676357057e-39L, 8.813736713132375348727889167749389235161e-1L, UNDERFLOW_EXCEPTION_FLOAT)
+  TEST_c_c (casin, -0x1.fp-129L, -0x1.000002p0L, -2.013062444707472738895109955455676357057e-39L, -8.813736713132375348727889167749389235161e-1L, UNDERFLOW_EXCEPTION_FLOAT)
+  TEST_c_c (casin, 0x1.000002p0L, 0x1.fp-129L, 1.570796326794896619231321691639751436268L, 4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (casin, -0x1.000002p0L, 0x1.fp-129L, -1.570796326794896619231321691639751436268L, 4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (casin, 0x1.000002p0L, -0x1.fp-129L, 1.570796326794896619231321691639751436268L, -4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (casin, -0x1.000002p0L, -0x1.fp-129L, -1.570796326794896619231321691639751436268L, -4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (casin, 0.0L, 0x1.000002p0L, 0.0L, 8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (casin, 0.0L, -0x1.000002p0L, 0.0L, -8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (casin, -0.0L, 0x1.000002p0L, -0.0L, 8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (casin, -0.0L, -0x1.000002p0L, -0.0L, -8.813736713132375348727889167749389235161e-1L)
+  TEST_c_c (casin, 0x1.000002p0L, 0.0L, 1.570796326794896619231321691639751442099L, 4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (casin, -0x1.000002p0L, 0.0L, -1.570796326794896619231321691639751442099L, 4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (casin, 0x1.000002p0L, -0.0L, 1.570796326794896619231321691639751442099L, -4.882812451493617206486388134172712975070e-4L)
+  TEST_c_c (casin, -0x1.000002p0L, -0.0L, -1.570796326794896619231321691639751442099L, -4.882812451493617206486388134172712975070e-4L)
+#ifndef TEST_FLOAT
+  TEST_c_c (casin, 0x1p-52L, 0x1.0000000000001p0L, 1.570092458683774885078102529858632363236e-16L, 8.813735870195431822418551933572982483664e-1L)
+  TEST_c_c (casin, 0x1p-52L, -0x1.0000000000001p0L, 1.570092458683774885078102529858632363236e-16L, -8.813735870195431822418551933572982483664e-1L)
+  TEST_c_c (casin, -0x1p-52L, 0x1.0000000000001p0L, -1.570092458683774885078102529858632363236e-16L, 8.813735870195431822418551933572982483664e-1L)
+  TEST_c_c (casin, -0x1p-52L, -0x1.0000000000001p0L, -1.570092458683774885078102529858632363236e-16L, -8.813735870195431822418551933572982483664e-1L)
+  TEST_c_c (casin, 0x1.0000000000001p0L, 0x1p-52L, 1.570796317204594913251280305810847349436L, 2.315303644582684770975188768022139415020e-8L)
+  TEST_c_c (casin, -0x1.0000000000001p0L, 0x1p-52L, -1.570796317204594913251280305810847349436L, 2.315303644582684770975188768022139415020e-8L)
+  TEST_c_c (casin, 0x1.0000000000001p0L, -0x1p-52L, 1.570796317204594913251280305810847349436L, -2.315303644582684770975188768022139415020e-8L)
+  TEST_c_c (casin, -0x1.0000000000001p0L, -0x1p-52L, -1.570796317204594913251280305810847349436L, -2.315303644582684770975188768022139415020e-8L)
+  TEST_c_c (casin, 0x1.fp-1025L, 0x1.0000000000001p0L, 3.810492908885321320083608113679347200012e-309L, 8.813735870195431822418551933572895326024e-1L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casin, 0x1.fp-1025L, -0x1.0000000000001p0L, 3.810492908885321320083608113679347200012e-309L, -8.813735870195431822418551933572895326024e-1L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casin, -0x1.fp-1025L, 0x1.0000000000001p0L, -3.810492908885321320083608113679347200012e-309L, 8.813735870195431822418551933572895326024e-1L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casin, -0x1.fp-1025L, -0x1.0000000000001p0L, -3.810492908885321320083608113679347200012e-309L, -8.813735870195431822418551933572895326024e-1L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casin, 0x1.0000000000001p0L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (casin, -0x1.0000000000001p0L, 0x1.fp-1025L, -1.570796326794896619231321691639751442099L, 2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (casin, 0x1.0000000000001p0L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (casin, -0x1.0000000000001p0L, -0x1.fp-1025L, -1.570796326794896619231321691639751442099L, -2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (casin, 0.0L, 0x1.0000000000001p0L, 0.0L, 8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (casin, 0.0L, -0x1.0000000000001p0L, 0.0L, -8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (casin, -0.0L, 0x1.0000000000001p0L, -0.0L, 8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (casin, -0.0L, -0x1.0000000000001p0L, -0.0L, -8.813735870195431822418551933572895326024e-1L)
+  TEST_c_c (casin, 0x1.0000000000001p0L, 0.0L, 1.570796326794896619231321691639751442099L, 2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (casin, -0x1.0000000000001p0L, 0.0L, -1.570796326794896619231321691639751442099L, 2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (casin, 0x1.0000000000001p0L, -0.0L, 1.570796326794896619231321691639751442099L, -2.107342425544701550354780375182800088393e-8L)
+  TEST_c_c (casin, -0x1.0000000000001p0L, -0.0L, -1.570796326794896619231321691639751442099L, -2.107342425544701550354780375182800088393e-8L)
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+  TEST_c_c (casin, 0x1p-63L, 0x1.0000000000000002p0L, 7.666467083416870406778649849746878368519e-20L, 8.813735870195430253092739958139610131001e-1L)
+  TEST_c_c (casin, 0x1p-63L, -0x1.0000000000000002p0L, 7.666467083416870406778649849746878368519e-20L, -8.813735870195430253092739958139610131001e-1L)
+  TEST_c_c (casin, -0x1p-63L, 0x1.0000000000000002p0L, -7.666467083416870406778649849746878368519e-20L, 8.813735870195430253092739958139610131001e-1L)
+  TEST_c_c (casin, -0x1p-63L, -0x1.0000000000000002p0L, -7.666467083416870406778649849746878368519e-20L, -8.813735870195430253092739958139610131001e-1L)
+  TEST_c_c (casin, 0x1.0000000000000002p0L, 0x1p-63L, 1.570796326582978888921215348380499122131L, 5.116146586219826555037807251857670783420e-10L)
+  TEST_c_c (casin, -0x1.0000000000000002p0L, 0x1p-63L, -1.570796326582978888921215348380499122131L, 5.116146586219826555037807251857670783420e-10L)
+  TEST_c_c (casin, 0x1.0000000000000002p0L, -0x1p-63L, 1.570796326582978888921215348380499122131L, -5.116146586219826555037807251857670783420e-10L)
+  TEST_c_c (casin, -0x1.0000000000000002p0L, -0x1p-63L, -1.570796326582978888921215348380499122131L, -5.116146586219826555037807251857670783420e-10L)
+# if LDBL_MIN_EXP <= -16381
+  TEST_c_c (casin, 0x1.fp-16385L, 0x1.0000000000000002p0L, 5.757683115456107043819140328235418018963e-4933L, 8.813735870195430253092739958139610130980e-1L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casin, 0x1.fp-16385L, -0x1.0000000000000002p0L, 5.757683115456107043819140328235418018963e-4933L, -8.813735870195430253092739958139610130980e-1L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casin, -0x1.fp-16385L, 0x1.0000000000000002p0L, -5.757683115456107043819140328235418018963e-4933L, 8.813735870195430253092739958139610130980e-1L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casin, -0x1.fp-16385L, -0x1.0000000000000002p0L, -5.757683115456107043819140328235418018963e-4933L, -8.813735870195430253092739958139610130980e-1L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casin, 0x1.0000000000000002p0L, 0x1.fp-16385L, 1.570796326794896619231321691639751442099L, 4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (casin, -0x1.0000000000000002p0L, 0x1.fp-16385L, -1.570796326794896619231321691639751442099L, 4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (casin, 0x1.0000000000000002p0L, -0x1.fp-16385L, 1.570796326794896619231321691639751442099L, -4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (casin, -0x1.0000000000000002p0L, -0x1.fp-16385L, -1.570796326794896619231321691639751442099L, -4.656612873077392578082927418388212703712e-10L)
+# endif
+  TEST_c_c (casin, 0.0L, 0x1.0000000000000002p0L, 0.0L, 8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (casin, 0.0L, -0x1.0000000000000002p0L, 0.0L, -8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (casin, -0.0L, 0x1.0000000000000002p0L, -0.0L, 8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (casin, -0.0L, -0x1.0000000000000002p0L, -0.0L, -8.813735870195430253092739958139610130980e-1L)
+  TEST_c_c (casin, 0x1.0000000000000002p0L, 0.0L, 1.570796326794896619231321691639751442099L, 4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (casin, -0x1.0000000000000002p0L, 0.0L, -1.570796326794896619231321691639751442099L, 4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (casin, 0x1.0000000000000002p0L, -0.0L, 1.570796326794896619231321691639751442099L, -4.656612873077392578082927418388212703712e-10L)
+  TEST_c_c (casin, -0x1.0000000000000002p0L, -0.0L, -1.570796326794896619231321691639751442099L, -4.656612873077392578082927418388212703712e-10L)
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 106
+  TEST_c_c (casin, 0x1p-106L, 0x1.000000000000000000000000008p0L, 8.715763992105246878957416200936726072500e-33L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (casin, 0x1p-106L, -0x1.000000000000000000000000008p0L, 8.715763992105246878957416200936726072500e-33L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (casin, -0x1p-106L, 0x1.000000000000000000000000008p0L, -8.715763992105246878957416200936726072500e-33L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (casin, -0x1p-106L, -0x1.000000000000000000000000008p0L, -8.715763992105246878957416200936726072500e-33L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (casin, 0x1.000000000000000000000000008p0L, 0x1p-106L, 1.570796326794896565289107467733682961928L, 2.285028863093221674154232933662774454211e-16L)
+  TEST_c_c (casin, -0x1.000000000000000000000000008p0L, 0x1p-106L, -1.570796326794896565289107467733682961928L, 2.285028863093221674154232933662774454211e-16L)
+  TEST_c_c (casin, 0x1.000000000000000000000000008p0L, -0x1p-106L, 1.570796326794896565289107467733682961928L, -2.285028863093221674154232933662774454211e-16L)
+  TEST_c_c (casin, -0x1.000000000000000000000000008p0L, -0x1p-106L, -1.570796326794896565289107467733682961928L, -2.285028863093221674154232933662774454211e-16L)
+  TEST_c_c (casin, 0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 3.810492908885321743133304375216570658278e-309L, 8.813735870195430252326093249798097405561e-1L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casin, 0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 3.810492908885321743133304375216570658278e-309L, -8.813735870195430252326093249798097405561e-1L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casin, -0x1.fp-1025L, 0x1.000000000000000000000000008p0L, -3.810492908885321743133304375216570658278e-309L, 8.813735870195430252326093249798097405561e-1L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casin, -0x1.fp-1025L, -0x1.000000000000000000000000008p0L, -3.810492908885321743133304375216570658278e-309L, -8.813735870195430252326093249798097405561e-1L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casin, 0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (casin, -0x1.000000000000000000000000008p0L, 0x1.fp-1025L, -1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (casin, 0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (casin, -0x1.000000000000000000000000008p0L, -0x1.fp-1025L, -1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (casin, 0.0L, 0x1.000000000000000000000000008p0L, 0.0L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (casin, 0.0L, -0x1.000000000000000000000000008p0L, 0.0L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (casin, -0.0L, 0x1.000000000000000000000000008p0L, -0.0L, 8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (casin, -0.0L, -0x1.000000000000000000000000008p0L, -0.0L, -8.813735870195430252326093249798097405561e-1L)
+  TEST_c_c (casin, 0x1.000000000000000000000000008p0L, 0.0L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (casin, -0x1.000000000000000000000000008p0L, 0.0L, -1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (casin, 0x1.000000000000000000000000008p0L, -0.0L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181636063482e-16L)
+  TEST_c_c (casin, -0x1.000000000000000000000000008p0L, -0.0L, -1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181636063482e-16L)
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 113
+  TEST_c_c (casin, 0x1p-113L, 0x1.0000000000000000000000000001p0L, 6.809190618832224124185481406981900518193e-35L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (casin, 0x1p-113L, -0x1.0000000000000000000000000001p0L, 6.809190618832224124185481406981900518193e-35L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (casin, -0x1p-113L, 0x1.0000000000000000000000000001p0L, -6.809190618832224124185481406981900518193e-35L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (casin, -0x1p-113L, -0x1.0000000000000000000000000001p0L, -6.809190618832224124185481406981900518193e-35L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (casin, 0x1.0000000000000000000000000001p0L, 0x1p-113L, 1.570796326794896614463458507897073960405L, 2.019699255375255198156433710951064632386e-17L)
+  TEST_c_c (casin, -0x1.0000000000000000000000000001p0L, 0x1p-113L, -1.570796326794896614463458507897073960405L, 2.019699255375255198156433710951064632386e-17L)
+  TEST_c_c (casin, 0x1.0000000000000000000000000001p0L, -0x1p-113L, 1.570796326794896614463458507897073960405L, -2.019699255375255198156433710951064632386e-17L)
+  TEST_c_c (casin, -0x1.0000000000000000000000000001p0L, -0x1p-113L, -1.570796326794896614463458507897073960405L, -2.019699255375255198156433710951064632386e-17L)
+  TEST_c_c (casin, 0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 5.757683115456107044131264955348448400014e-4933L, 8.813735870195430252326093249797924452120e-1L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casin, 0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 5.757683115456107044131264955348448400014e-4933L, -8.813735870195430252326093249797924452120e-1L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casin, -0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, -5.757683115456107044131264955348448400014e-4933L, 8.813735870195430252326093249797924452120e-1L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casin, -0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, -5.757683115456107044131264955348448400014e-4933L, -8.813735870195430252326093249797924452120e-1L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casin, 0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 1.570796326794896619231321691639751442099L, 1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (casin, -0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, -1.570796326794896619231321691639751442099L, 1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (casin, 0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 1.570796326794896619231321691639751442099L, -1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (casin, -0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, -1.570796326794896619231321691639751442099L, -1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (casin, 0.0L, 0x1.0000000000000000000000000001p0L, 0.0L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (casin, 0.0L, -0x1.0000000000000000000000000001p0L, 0.0L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (casin, -0.0L, 0x1.0000000000000000000000000001p0L, -0.0L, 8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (casin, -0.0L, -0x1.0000000000000000000000000001p0L, -0.0L, -8.813735870195430252326093249797924452120e-1L)
+  TEST_c_c (casin, 0x1.0000000000000000000000000001p0L, 0.0L, 1.570796326794896619231321691639751442099L, 1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (casin, -0x1.0000000000000000000000000001p0L, 0.0L, -1.570796326794896619231321691639751442099L, 1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (casin, 0x1.0000000000000000000000000001p0L, -0.0L, 1.570796326794896619231321691639751442099L, -1.962615573354718824241727964954454332780e-17L)
+  TEST_c_c (casin, -0x1.0000000000000000000000000001p0L, -0.0L, -1.570796326794896619231321691639751442099L, -1.962615573354718824241727964954454332780e-17L)
+#endif
+
   TEST_c_c (casin, 0.75L, 1.25L, 0.453276177638793913448921196101971749L, 1.13239363160530819522266333696834467L);
   TEST_c_c (casin, -2, -3, -0.57065278432109940071028387968566963L, -1.9833870299165354323470769028940395L);
 
@@ -2242,6 +2504,137 @@ casinh_test (void)
   TEST_c_c (casinh, -1.0L, -0x1.fp-16385L, -8.813735870195430252326093249797923090282e-1L, -5.757683115456107044131264955348448954458e-4933L, UNDERFLOW_EXCEPTION);
 #endif
 
+  TEST_c_c (casinh, 0x1p-23L, 0x1.000002p0L, 5.364668491573609633134147164031476452679e-4L, 1.570574114956455764594481054234834678422L)
+  TEST_c_c (casinh, 0x1p-23L, -0x1.000002p0L, 5.364668491573609633134147164031476452679e-4L, -1.570574114956455764594481054234834678422L)
+  TEST_c_c (casinh, -0x1p-23L, 0x1.000002p0L, -5.364668491573609633134147164031476452679e-4L, 1.570574114956455764594481054234834678422L)
+  TEST_c_c (casinh, -0x1p-23L, -0x1.000002p0L, -5.364668491573609633134147164031476452679e-4L, -1.570574114956455764594481054234834678422L)
+  TEST_c_c (casinh, 0x1.000002p0L, 0x1p-23L, 8.813736713132400470205730751186547909968e-1L, 8.429369199749229560964789467980644296420e-8L)
+  TEST_c_c (casinh, -0x1.000002p0L, 0x1p-23L, -8.813736713132400470205730751186547909968e-1L, 8.429369199749229560964789467980644296420e-8L)
+  TEST_c_c (casinh, 0x1.000002p0L, -0x1p-23L, 8.813736713132400470205730751186547909968e-1L, -8.429369199749229560964789467980644296420e-8L)
+  TEST_c_c (casinh, -0x1.000002p0L, -0x1p-23L, -8.813736713132400470205730751186547909968e-1L, -8.429369199749229560964789467980644296420e-8L)
+  TEST_c_c (casinh, 0x1.fp-129L, 0x1.000002p0L, 4.882812451493617206486388134172712975070e-4L, 1.570796326794896619231321691639751436268L)
+  TEST_c_c (casinh, 0x1.fp-129L, -0x1.000002p0L, 4.882812451493617206486388134172712975070e-4L, -1.570796326794896619231321691639751436268L)
+  TEST_c_c (casinh, -0x1.fp-129L, 0x1.000002p0L, -4.882812451493617206486388134172712975070e-4L, 1.570796326794896619231321691639751436268L)
+  TEST_c_c (casinh, -0x1.fp-129L, -0x1.000002p0L, -4.882812451493617206486388134172712975070e-4L, -1.570796326794896619231321691639751436268L)
+  TEST_c_c (casinh, 0x1.000002p0L, 0x1.fp-129L, 8.813736713132375348727889167749389235161e-1L, 2.013062444707472738895109955455676357057e-39L, UNDERFLOW_EXCEPTION_FLOAT)
+  TEST_c_c (casinh, -0x1.000002p0L, 0x1.fp-129L, -8.813736713132375348727889167749389235161e-1L, 2.013062444707472738895109955455676357057e-39L, UNDERFLOW_EXCEPTION_FLOAT)
+  TEST_c_c (casinh, 0x1.000002p0L, -0x1.fp-129L, 8.813736713132375348727889167749389235161e-1L, -2.013062444707472738895109955455676357057e-39L, UNDERFLOW_EXCEPTION_FLOAT)
+  TEST_c_c (casinh, -0x1.000002p0L, -0x1.fp-129L, -8.813736713132375348727889167749389235161e-1L, -2.013062444707472738895109955455676357057e-39L, UNDERFLOW_EXCEPTION_FLOAT)
+  TEST_c_c (casinh, 0.0L, 0x1.000002p0L, 4.882812451493617206486388134172712975070e-4L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0.0L, -0x1.000002p0L, 4.882812451493617206486388134172712975070e-4L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, 0x1.000002p0L, -4.882812451493617206486388134172712975070e-4L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, -0x1.000002p0L, -4.882812451493617206486388134172712975070e-4L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.000002p0L, 0.0L, 8.813736713132375348727889167749389235161e-1L, 0.0L)
+  TEST_c_c (casinh, -0x1.000002p0L, 0.0L, -8.813736713132375348727889167749389235161e-1L, 0.0L)
+  TEST_c_c (casinh, 0x1.000002p0L, -0.0L, 8.813736713132375348727889167749389235161e-1L, -0.0L)
+  TEST_c_c (casinh, -0x1.000002p0L, -0.0L, -8.813736713132375348727889167749389235161e-1L, -0.0L)
+#ifndef TEST_FLOAT
+  TEST_c_c (casinh, 0x1p-52L, 0x1.0000000000001p0L, 2.315303644582684770975188768022139415020e-8L, 1.570796317204594913251280305810847349436L)
+  TEST_c_c (casinh, 0x1p-52L, -0x1.0000000000001p0L, 2.315303644582684770975188768022139415020e-8L, -1.570796317204594913251280305810847349436L)
+  TEST_c_c (casinh, -0x1p-52L, 0x1.0000000000001p0L, -2.315303644582684770975188768022139415020e-8L, 1.570796317204594913251280305810847349436L)
+  TEST_c_c (casinh, -0x1p-52L, -0x1.0000000000001p0L, -2.315303644582684770975188768022139415020e-8L, -1.570796317204594913251280305810847349436L)
+  TEST_c_c (casinh, 0x1.0000000000001p0L, 0x1p-52L, 8.813735870195431822418551933572982483664e-1L, 1.570092458683774885078102529858632363236e-16L)
+  TEST_c_c (casinh, -0x1.0000000000001p0L, 0x1p-52L, -8.813735870195431822418551933572982483664e-1L, 1.570092458683774885078102529858632363236e-16L)
+  TEST_c_c (casinh, 0x1.0000000000001p0L, -0x1p-52L, 8.813735870195431822418551933572982483664e-1L, -1.570092458683774885078102529858632363236e-16L)
+  TEST_c_c (casinh, -0x1.0000000000001p0L, -0x1p-52L, -8.813735870195431822418551933572982483664e-1L, -1.570092458683774885078102529858632363236e-16L)
+  TEST_c_c (casinh, 0x1.fp-1025L, 0x1.0000000000001p0L, 2.107342425544701550354780375182800088393e-8L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.fp-1025L, -0x1.0000000000001p0L, 2.107342425544701550354780375182800088393e-8L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0x1.fp-1025L, 0x1.0000000000001p0L, -2.107342425544701550354780375182800088393e-8L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0x1.fp-1025L, -0x1.0000000000001p0L, -2.107342425544701550354780375182800088393e-8L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.0000000000001p0L, 0x1.fp-1025L, 8.813735870195431822418551933572895326024e-1L, 3.810492908885321320083608113679347200012e-309L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casinh, -0x1.0000000000001p0L, 0x1.fp-1025L, -8.813735870195431822418551933572895326024e-1L, 3.810492908885321320083608113679347200012e-309L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casinh, 0x1.0000000000001p0L, -0x1.fp-1025L, 8.813735870195431822418551933572895326024e-1L, -3.810492908885321320083608113679347200012e-309L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casinh, -0x1.0000000000001p0L, -0x1.fp-1025L, -8.813735870195431822418551933572895326024e-1L, -3.810492908885321320083608113679347200012e-309L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casinh, 0.0L, 0x1.0000000000001p0L, 2.107342425544701550354780375182800088393e-8L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0.0L, -0x1.0000000000001p0L, 2.107342425544701550354780375182800088393e-8L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, 0x1.0000000000001p0L, -2.107342425544701550354780375182800088393e-8L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, -0x1.0000000000001p0L, -2.107342425544701550354780375182800088393e-8L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.0000000000001p0L, 0.0L, 8.813735870195431822418551933572895326024e-1L, 0.0L)
+  TEST_c_c (casinh, -0x1.0000000000001p0L, 0.0L, -8.813735870195431822418551933572895326024e-1L, 0.0L)
+  TEST_c_c (casinh, 0x1.0000000000001p0L, -0.0L, 8.813735870195431822418551933572895326024e-1L, -0.0L)
+  TEST_c_c (casinh, -0x1.0000000000001p0L, -0.0L, -8.813735870195431822418551933572895326024e-1L, -0.0L)
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+  TEST_c_c (casinh, 0x1p-63L, 0x1.0000000000000002p0L, 5.116146586219826555037807251857670783420e-10L, 1.570796326582978888921215348380499122131L)
+  TEST_c_c (casinh, 0x1p-63L, -0x1.0000000000000002p0L, 5.116146586219826555037807251857670783420e-10L, -1.570796326582978888921215348380499122131L)
+  TEST_c_c (casinh, -0x1p-63L, 0x1.0000000000000002p0L, -5.116146586219826555037807251857670783420e-10L, 1.570796326582978888921215348380499122131L)
+  TEST_c_c (casinh, -0x1p-63L, -0x1.0000000000000002p0L, -5.116146586219826555037807251857670783420e-10L, -1.570796326582978888921215348380499122131L)
+  TEST_c_c (casinh, 0x1.0000000000000002p0L, 0x1p-63L, 8.813735870195430253092739958139610131001e-1L, 7.666467083416870406778649849746878368519e-20L)
+  TEST_c_c (casinh, -0x1.0000000000000002p0L, 0x1p-63L, -8.813735870195430253092739958139610131001e-1L, 7.666467083416870406778649849746878368519e-20L)
+  TEST_c_c (casinh, 0x1.0000000000000002p0L, -0x1p-63L, 8.813735870195430253092739958139610131001e-1L, -7.666467083416870406778649849746878368519e-20L)
+  TEST_c_c (casinh, -0x1.0000000000000002p0L, -0x1p-63L, -8.813735870195430253092739958139610131001e-1L, -7.666467083416870406778649849746878368519e-20L)
+# if LDBL_MIN_EXP <= -16381
+  TEST_c_c (casinh, 0x1.fp-16385L, 0x1.0000000000000002p0L, 4.656612873077392578082927418388212703712e-10L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.fp-16385L, -0x1.0000000000000002p0L, 4.656612873077392578082927418388212703712e-10L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0x1.fp-16385L, 0x1.0000000000000002p0L, -4.656612873077392578082927418388212703712e-10L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0x1.fp-16385L, -0x1.0000000000000002p0L, -4.656612873077392578082927418388212703712e-10L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.0000000000000002p0L, 0x1.fp-16385L, 8.813735870195430253092739958139610130980e-1L, 5.757683115456107043819140328235418018963e-4933L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casinh, -0x1.0000000000000002p0L, 0x1.fp-16385L, -8.813735870195430253092739958139610130980e-1L, 5.757683115456107043819140328235418018963e-4933L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casinh, 0x1.0000000000000002p0L, -0x1.fp-16385L, 8.813735870195430253092739958139610130980e-1L, -5.757683115456107043819140328235418018963e-4933L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casinh, -0x1.0000000000000002p0L, -0x1.fp-16385L, -8.813735870195430253092739958139610130980e-1L, -5.757683115456107043819140328235418018963e-4933L, UNDERFLOW_EXCEPTION)
+# endif
+  TEST_c_c (casinh, 0.0L, 0x1.0000000000000002p0L, 4.656612873077392578082927418388212703712e-10L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0.0L, -0x1.0000000000000002p0L, 4.656612873077392578082927418388212703712e-10L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, 0x1.0000000000000002p0L, -4.656612873077392578082927418388212703712e-10L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, -0x1.0000000000000002p0L, -4.656612873077392578082927418388212703712e-10L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.0000000000000002p0L, 0.0L, 8.813735870195430253092739958139610130980e-1L, 0.0L)
+  TEST_c_c (casinh, -0x1.0000000000000002p0L, 0.0L, -8.813735870195430253092739958139610130980e-1L, 0.0L)
+  TEST_c_c (casinh, 0x1.0000000000000002p0L, -0.0L, 8.813735870195430253092739958139610130980e-1L, -0.0L)
+  TEST_c_c (casinh, -0x1.0000000000000002p0L, -0.0L, -8.813735870195430253092739958139610130980e-1L, -0.0L)
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 106
+  TEST_c_c (casinh, 0x1p-106L, 0x1.000000000000000000000000008p0L, 2.285028863093221674154232933662774454211e-16L, 1.570796326794896565289107467733682961928L)
+  TEST_c_c (casinh, 0x1p-106L, -0x1.000000000000000000000000008p0L, 2.285028863093221674154232933662774454211e-16L, -1.570796326794896565289107467733682961928L)
+  TEST_c_c (casinh, -0x1p-106L, 0x1.000000000000000000000000008p0L, -2.285028863093221674154232933662774454211e-16L, 1.570796326794896565289107467733682961928L)
+  TEST_c_c (casinh, -0x1p-106L, -0x1.000000000000000000000000008p0L, -2.285028863093221674154232933662774454211e-16L, -1.570796326794896565289107467733682961928L)
+  TEST_c_c (casinh, 0x1.000000000000000000000000008p0L, 0x1p-106L, 8.813735870195430252326093249798097405561e-1L, 8.715763992105246878957416200936726072500e-33L)
+  TEST_c_c (casinh, -0x1.000000000000000000000000008p0L, 0x1p-106L, -8.813735870195430252326093249798097405561e-1L, 8.715763992105246878957416200936726072500e-33L)
+  TEST_c_c (casinh, 0x1.000000000000000000000000008p0L, -0x1p-106L, 8.813735870195430252326093249798097405561e-1L, -8.715763992105246878957416200936726072500e-33L)
+  TEST_c_c (casinh, -0x1.000000000000000000000000008p0L, -0x1p-106L, -8.813735870195430252326093249798097405561e-1L, -8.715763992105246878957416200936726072500e-33L)
+  TEST_c_c (casinh, 0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 2.220446049250313080847263336181636063482e-16L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 2.220446049250313080847263336181636063482e-16L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0x1.fp-1025L, 0x1.000000000000000000000000008p0L, -2.220446049250313080847263336181636063482e-16L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0x1.fp-1025L, -0x1.000000000000000000000000008p0L, -2.220446049250313080847263336181636063482e-16L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 8.813735870195430252326093249798097405561e-1L, 3.810492908885321743133304375216570658278e-309L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casinh, -0x1.000000000000000000000000008p0L, 0x1.fp-1025L, -8.813735870195430252326093249798097405561e-1L, 3.810492908885321743133304375216570658278e-309L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casinh, 0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 8.813735870195430252326093249798097405561e-1L, -3.810492908885321743133304375216570658278e-309L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casinh, -0x1.000000000000000000000000008p0L, -0x1.fp-1025L, -8.813735870195430252326093249798097405561e-1L, -3.810492908885321743133304375216570658278e-309L, UNDERFLOW_EXCEPTION_DOUBLE)
+  TEST_c_c (casinh, 0.0L, 0x1.000000000000000000000000008p0L, 2.220446049250313080847263336181636063482e-16L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0.0L, -0x1.000000000000000000000000008p0L, 2.220446049250313080847263336181636063482e-16L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, 0x1.000000000000000000000000008p0L, -2.220446049250313080847263336181636063482e-16L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, -0x1.000000000000000000000000008p0L, -2.220446049250313080847263336181636063482e-16L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.000000000000000000000000008p0L, 0.0L, 8.813735870195430252326093249798097405561e-1L, 0.0L)
+  TEST_c_c (casinh, -0x1.000000000000000000000000008p0L, 0.0L, -8.813735870195430252326093249798097405561e-1L, 0.0L)
+  TEST_c_c (casinh, 0x1.000000000000000000000000008p0L, -0.0L, 8.813735870195430252326093249798097405561e-1L, -0.0L)
+  TEST_c_c (casinh, -0x1.000000000000000000000000008p0L, -0.0L, -8.813735870195430252326093249798097405561e-1L, -0.0L)
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 113
+  TEST_c_c (casinh, 0x1p-113L, 0x1.0000000000000000000000000001p0L, 2.019699255375255198156433710951064632386e-17L, 1.570796326794896614463458507897073960405L)
+  TEST_c_c (casinh, 0x1p-113L, -0x1.0000000000000000000000000001p0L, 2.019699255375255198156433710951064632386e-17L, -1.570796326794896614463458507897073960405L)
+  TEST_c_c (casinh, -0x1p-113L, 0x1.0000000000000000000000000001p0L, -2.019699255375255198156433710951064632386e-17L, 1.570796326794896614463458507897073960405L)
+  TEST_c_c (casinh, -0x1p-113L, -0x1.0000000000000000000000000001p0L, -2.019699255375255198156433710951064632386e-17L, -1.570796326794896614463458507897073960405L)
+  TEST_c_c (casinh, 0x1.0000000000000000000000000001p0L, 0x1p-113L, 8.813735870195430252326093249797924452120e-1L, 6.809190618832224124185481406981900518193e-35L)
+  TEST_c_c (casinh, -0x1.0000000000000000000000000001p0L, 0x1p-113L, -8.813735870195430252326093249797924452120e-1L, 6.809190618832224124185481406981900518193e-35L)
+  TEST_c_c (casinh, 0x1.0000000000000000000000000001p0L, -0x1p-113L, 8.813735870195430252326093249797924452120e-1L, -6.809190618832224124185481406981900518193e-35L)
+  TEST_c_c (casinh, -0x1.0000000000000000000000000001p0L, -0x1p-113L, -8.813735870195430252326093249797924452120e-1L, -6.809190618832224124185481406981900518193e-35L)
+  TEST_c_c (casinh, 0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 1.962615573354718824241727964954454332780e-17L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 1.962615573354718824241727964954454332780e-17L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, -1.962615573354718824241727964954454332780e-17L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, -1.962615573354718824241727964954454332780e-17L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 8.813735870195430252326093249797924452120e-1L, 5.757683115456107044131264955348448400014e-4933L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casinh, -0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, -8.813735870195430252326093249797924452120e-1L, 5.757683115456107044131264955348448400014e-4933L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casinh, 0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 8.813735870195430252326093249797924452120e-1L, -5.757683115456107044131264955348448400014e-4933L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casinh, -0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, -8.813735870195430252326093249797924452120e-1L, -5.757683115456107044131264955348448400014e-4933L, UNDERFLOW_EXCEPTION)
+  TEST_c_c (casinh, 0.0L, 0x1.0000000000000000000000000001p0L, 1.962615573354718824241727964954454332780e-17L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0.0L, -0x1.0000000000000000000000000001p0L, 1.962615573354718824241727964954454332780e-17L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, 0x1.0000000000000000000000000001p0L, -1.962615573354718824241727964954454332780e-17L, 1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, -0.0L, -0x1.0000000000000000000000000001p0L, -1.962615573354718824241727964954454332780e-17L, -1.570796326794896619231321691639751442099L)
+  TEST_c_c (casinh, 0x1.0000000000000000000000000001p0L, 0.0L, 8.813735870195430252326093249797924452120e-1L, 0.0L)
+  TEST_c_c (casinh, -0x1.0000000000000000000000000001p0L, 0.0L, -8.813735870195430252326093249797924452120e-1L, 0.0L)
+  TEST_c_c (casinh, 0x1.0000000000000000000000000001p0L, -0.0L, 8.813735870195430252326093249797924452120e-1L, -0.0L)
+  TEST_c_c (casinh, -0x1.0000000000000000000000000001p0L, -0.0L, -8.813735870195430252326093249797924452120e-1L, -0.0L)
+#endif
+
   TEST_c_c (casinh, 0.75L, 1.25L, 1.03171853444778027336364058631006594L, 0.911738290968487636358489564316731207L);
   TEST_c_c (casinh, -2, -3, -1.9686379257930962917886650952454982L, -0.96465850440760279204541105949953237L);