/*      $OpenBSD: isnan.c,v 1.9 2013/11/12 06:09:48 deraadt Exp $       */
/*
 * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <machine/ieee.h>
#include <float.h>
#include <math.h>

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmissing-prototypes"

__sym_compat(__isnanf, past___isnanf, DF306.0);
int
past___isnanf(float f)
{
        struct ieee_single *p = (struct ieee_single *)&f;
 
        return (p->sng_exp == SNG_EXP_INFNAN && p->sng_frac != 0);
}

__sym_compat(isnanf, weak_isnanf, DF306.0);
int
weak_isnanf(float f)
{
        struct ieee_single *p = (struct ieee_single *)&f;
 
        return (p->sng_exp == SNG_EXP_INFNAN && p->sng_frac != 0);
}
 
#pragma GCC diagnostic pop