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-rw-r--r--math/s_casinf.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/math/s_casinf.c b/math/s_casinf.c
index 5278dbbf78..56c618fcf1 100644
--- a/math/s_casinf.c
+++ b/math/s_casinf.c
@@ -1,5 +1,5 @@
 /* Return arc sine of complex float value.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -20,6 +20,7 @@
 
 #include <complex.h>
 #include <math.h>
+#include <math_private.h>
 
 
 __complex__ float
@@ -33,7 +34,7 @@ __casinf (__complex__ float x)
 	{
 	  res = x;
 	}
-      else if (__isinff (__real__ x) || __isinff (__imag__ x))
+      else if (__isinf_nsf (__real__ x) || __isinf_nsf (__imag__ x))
 	{
 	  __real__ res = __nanf ("");
 	  __imag__ res = __copysignf (HUGE_VALF, __imag__ x);