/* s_isnanl.c -- long double version for i387 of s_isnan.c.

 * Conversion to long double by Ulrich Drepper,

 * Cygnus Support, drepper@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: $";

#endif

/*

 * isnanl(x) returns 1 is x is nan, else 0;

 * no branching!

 */

#include <math.h>

#include <math_private.h>

int __isnanl(long double x)

{

	int32_t se,hx,lx;

	GET_LDOUBLE_WORDS(se,hx,lx,x);

	se = (se & 0x7fff) << 1;

	/* The additional & 0x7fffffff is required because Intel's

	   extended format has the normally implicit 1 explicit

	   present.  Sigh!  */

	lx |= hx & 0x7fffffff;

	se |= (uint32_t)(lx|(-lx))>>31;

	se = 0xfffe - se;

	return (int)((uint32_t)(se))>>16;

}

hidden_def (__isnanl)

weak_alias (__isnanl, isnanl)