1*390c8400Smartynas /* $OpenBSD: s_nanl.c,v 1.1 2008/12/09 20:00:35 martynas Exp $ */
2*390c8400Smartynas /*-
3*390c8400Smartynas * Copyright (c) 2007 David Schultz
4*390c8400Smartynas * All rights reserved.
5*390c8400Smartynas *
6*390c8400Smartynas * Redistribution and use in source and binary forms, with or without
7*390c8400Smartynas * modification, are permitted provided that the following conditions
8*390c8400Smartynas * are met:
9*390c8400Smartynas * 1. Redistributions of source code must retain the above copyright
10*390c8400Smartynas * notice, this list of conditions and the following disclaimer.
11*390c8400Smartynas * 2. Redistributions in binary form must reproduce the above copyright
12*390c8400Smartynas * notice, this list of conditions and the following disclaimer in the
13*390c8400Smartynas * documentation and/or other materials provided with the distribution.
14*390c8400Smartynas *
15*390c8400Smartynas * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16*390c8400Smartynas * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17*390c8400Smartynas * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18*390c8400Smartynas * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
19*390c8400Smartynas * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20*390c8400Smartynas * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21*390c8400Smartynas * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22*390c8400Smartynas * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23*390c8400Smartynas * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24*390c8400Smartynas * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25*390c8400Smartynas * SUCH DAMAGE.
26*390c8400Smartynas *
27*390c8400Smartynas * $FreeBSD: src/lib/msun/ld128/s_nanl.c,v 1.3 2008/03/02 20:16:55 das Exp $
28*390c8400Smartynas */
29*390c8400Smartynas
30*390c8400Smartynas #include <sys/types.h>
31*390c8400Smartynas #include <machine/ieee.h>
32*390c8400Smartynas #include <math.h>
33*390c8400Smartynas
34*390c8400Smartynas #include "math_private.h"
35*390c8400Smartynas
36*390c8400Smartynas long double
nanl(const char * s)37*390c8400Smartynas nanl(const char *s)
38*390c8400Smartynas {
39*390c8400Smartynas union {
40*390c8400Smartynas long double e;
41*390c8400Smartynas struct ieee_ext ieee;
42*390c8400Smartynas uint32_t bits[4];
43*390c8400Smartynas } u;
44*390c8400Smartynas
45*390c8400Smartynas _scan_nan(u.bits, 4, s);
46*390c8400Smartynas u.ieee.ext_exp = 0x7fff;
47*390c8400Smartynas u.ieee.ext_frach |= 1U << 15; /* make it a quiet NaN */
48*390c8400Smartynas
49*390c8400Smartynas return (u.e);
50*390c8400Smartynas }
51