-/* @(#)s_isnan.c 5.1 93/09/24 */
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
* ====================================================
*/
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: s_isnan.c,v 1.8 1995/05/10 20:47:36 jtc Exp $";
-#endif
-
/*
* isnan(x) returns 1 is x is nan, else 0;
* no branching!
#include "math.h"
#include "math_private.h"
-libm_hidden_proto (__isnan)
-#ifdef __STDC__
- int __isnan(double x)
-#else
- int __isnan(x)
- double x;
-#endif
+int __isnan(double x)
{
int32_t hx,lx;
EXTRACT_WORDS(hx,lx,x);
hx = 0x7ff00000 - hx;
return (int)(((u_int32_t)hx)>>31);
}
-libm_hidden_def (__isnan)
-weak_alias (__isnan, isnan)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__isnan, __isnanl)
-weak_alias (__isnan, isnanl)
-#endif
+libm_hidden_def(__isnan)