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/* s_isnanf.c -- float version of s_isnan.c.
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
*/
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
#if defined(LIBM_SCCS) && !defined(lint)
static char rcsid[] = "$NetBSD: s_isnanf.c,v 1.4 1995/05/10 20:47:38 jtc Exp $";
#endif
/*
* isnanf(x) returns 1 is x is nan, else 0;
* no branching!
*/
#include "math.h"
#include "math_private.h"
libm_hidden_proto (__isnanf)
#ifdef __STDC__
int __isnanf(float x)
#else
int __isnanf(x)
float x;
#endif
{
int32_t ix;
GET_FLOAT_WORD(ix,x);
ix &= 0x7fffffff;
ix = 0x7f800000 - ix;
return (int)(((u_int32_t)(ix))>>31);
}
libm_hidden_def (__isnanf)
weak_alias (__isnanf, isnanf)
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