/*-
 * Copyright (c) 2007 David Schultz
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#include <float.h>
#include <math.h>

#include "../../../contrib/gdtoa/gdtoaimp.h"
#include "math_private.h"

double
nan(const char *s)
{
	static FPI fpi = { 52, -1074, 971, 1, SI };

	double result;
	ULong bits[2];

	s--;
	hexnan(&s, &fpi, bits);
	SET_HIGH_WORD(result, 0x7ff80000 | bits[1]);
	SET_LOW_WORD(result, bits[0]);
	return (result);
}

float
nanf(const char *s)
{
	static FPI fpi = { 24, -149, 104, 1, SI };

	float result;
	ULong bits[1];

	s--;
	hexnan(&s, &fpi, bits);
	SET_FLOAT_WORD(result, 0x7fc00000 | bits[0]);
	return (result);
}

#if (LDBL_MANT_DIG == 53)
__weak_reference(nan, nanl);
#endif