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-rw-r--r--math/s_ctanh.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/math/s_ctanh.c b/math/s_ctanh.c
index ca4c0e296b..1347d07834 100644
--- a/math/s_ctanh.c
+++ b/math/s_ctanh.c
@@ -53,12 +53,11 @@ __ctanh (__complex__ double x)
       double sinix, cosix;
       double den;
       const int t = (int) ((DBL_MAX_EXP - 1) * M_LN2 / 2);
-      int icls = fpclassify (__imag__ x);
 
       /* tanh(x+iy) = (sinh(2x) + i*sin(2y))/(cosh(2x) + cos(2y))
 	 = (sinh(x)*cosh(x) + i*sin(y)*cos(y))/(sinh(x)^2 + cos(y)^2).  */
 
-      if (__glibc_likely (icls != FP_SUBNORMAL))
+      if (__glibc_likely (fabs (__imag__ x) > DBL_MIN))
 	{
 	  __sincos (__imag__ x, &sinix, &cosix);
 	}