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/* s_isnanl.c -- long double version of s_isnan.c.
* Conversion to long double by Jakub Jelinek, jj@ultra.linux.cz.
*/
/*
* ====================================================
* 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: $";
#endif
/*
* isnanl(x) returns 1 is x is nan, else 0;
* no branching!
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
int __isnanl(long double x)
#else
int __isnanl(x)
long double x;
#endif
{
int64_t hx,lx;
GET_LDOUBLE_WORDS64(hx,lx,x);
hx &= 0x7fffffffffffffffLL;
hx |= (u_int64_t)(lx|(-lx))>>63;
hx = 0x7fff000000000000LL - hx;
return (int)((u_int64_t)hx>>63);
}
weak_alias (__isnanl, isnanl)
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