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authorLiubov Dmitrieva <liubov.dmitrieva@gmail.com>2012-09-25 20:41:17 +0200
committerAndreas Jaeger <aj@suse.de>2012-09-25 20:41:17 +0200
commit6d3bf1993190edc502d01e8ca42c4482b20a5b6c (patch)
treeceef4ffabe768f560a3a4d3f6b556b7b70aac37d /math/s_csinh.c
parent203e56032f77d0b36701deaee360e9cdda35d54e (diff)
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Fix wrong ussage of sincos for subnormal arguments
Diffstat (limited to 'math/s_csinh.c')
-rw-r--r--math/s_csinh.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/math/s_csinh.c b/math/s_csinh.c
index 56bb256239..20edbd13f0 100644
--- a/math/s_csinh.c
+++ b/math/s_csinh.c
@@ -42,7 +42,15 @@ __csinh (__complex__ double x)
 	  const int t = (int) ((DBL_MAX_EXP - 1) * M_LN2);
 	  double sinix, cosix;
 
-	  __sincos (__imag__ x, &sinix, &cosix);
+	  if (__builtin_expect (icls != FP_SUBNORMAL, 1))
+	    {
+	      __sincos (__imag__ x, &sinix, &cosix);
+	    }
+	  else
+	    {
+	      sinix = __imag__ x;
+	      cosix = 1.0;
+	    }
 
 	  if (fabs (__real__ x) > t)
 	    {
@@ -109,7 +117,15 @@ __csinh (__complex__ double x)
 	  /* Imaginary part is finite.  */
 	  double sinix, cosix;
 
-	  __sincos (__imag__ x, &sinix, &cosix);
+	  if (__builtin_expect (icls != FP_SUBNORMAL, 1))
+	    {
+	      __sincos (__imag__ x, &sinix, &cosix);
+	    }
+	  else
+	    {
+	      sinix = __imag__ x;
+	      cosix = 1.0;
+	    }
 
 	  __real__ retval = __copysign (HUGE_VAL, cosix);
 	  __imag__ retval = __copysign (HUGE_VAL, sinix);