From 77425c63e72bc0c01d81bc7e9ba4bb41d11679e6 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@gmail.com>
Date: Sat, 22 Oct 2011 13:17:30 -0400
Subject: Add branch predictions to complex math code

---
 math/s_ctanh.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

(limited to 'math/s_ctanh.c')

diff --git a/math/s_ctanh.c b/math/s_ctanh.c
index f4a1d7e..9d31c43 100644
--- a/math/s_ctanh.c
+++ b/math/s_ctanh.c
@@ -21,7 +21,6 @@
 #include <complex.h>
 #include <fenv.h>
 #include <math.h>
-
 #include <math_private.h>
 
 
@@ -30,7 +29,7 @@ __ctanh (__complex__ double x)
 {
   __complex__ double res;
 
-  if (!isfinite (__real__ x) || !isfinite (__imag__ x))
+  if (__builtin_expect (!isfinite (__real__ x) || !isfinite (__imag__ x), 0))
     {
       if (__isinf_ns (__real__ x))
 	{
@@ -46,10 +45,8 @@ __ctanh (__complex__ double x)
 	  __real__ res = __nan ("");
 	  __imag__ res = __nan ("");
 
-#ifdef FE_INVALID
 	  if (__isinf_ns (__imag__ x))
 	    feraiseexcept (FE_INVALID);
-#endif
 	}
     }
   else
-- 
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