1*05a0b428SJohn Marino /* $OpenBSD: s_nanl.c,v 1.1 2008/12/09 20:00:35 martynas Exp $ */
2*05a0b428SJohn Marino /*-
3*05a0b428SJohn Marino * Copyright (c) 2007 David Schultz
4*05a0b428SJohn Marino * All rights reserved.
5*05a0b428SJohn Marino *
6*05a0b428SJohn Marino * Redistribution and use in source and binary forms, with or without
7*05a0b428SJohn Marino * modification, are permitted provided that the following conditions
8*05a0b428SJohn Marino * are met:
9*05a0b428SJohn Marino * 1. Redistributions of source code must retain the above copyright
10*05a0b428SJohn Marino * notice, this list of conditions and the following disclaimer.
11*05a0b428SJohn Marino * 2. Redistributions in binary form must reproduce the above copyright
12*05a0b428SJohn Marino * notice, this list of conditions and the following disclaimer in the
13*05a0b428SJohn Marino * documentation and/or other materials provided with the distribution.
14*05a0b428SJohn Marino *
15*05a0b428SJohn Marino * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16*05a0b428SJohn Marino * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17*05a0b428SJohn Marino * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18*05a0b428SJohn Marino * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
19*05a0b428SJohn Marino * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20*05a0b428SJohn Marino * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21*05a0b428SJohn Marino * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22*05a0b428SJohn Marino * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23*05a0b428SJohn Marino * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24*05a0b428SJohn Marino * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25*05a0b428SJohn Marino * SUCH DAMAGE.
26*05a0b428SJohn Marino *
27*05a0b428SJohn Marino * $FreeBSD: src/lib/msun/ld80/s_nanl.c,v 1.2 2007/12/18 23:46:31 das Exp $
28*05a0b428SJohn Marino */
29*05a0b428SJohn Marino
30*05a0b428SJohn Marino #include <sys/types.h>
31*05a0b428SJohn Marino #include <machine/ieee.h>
32*05a0b428SJohn Marino #include <math.h>
33*05a0b428SJohn Marino
34*05a0b428SJohn Marino #include "math_private.h"
35*05a0b428SJohn Marino
36*05a0b428SJohn Marino long double
nanl(const char * s)37*05a0b428SJohn Marino nanl(const char *s)
38*05a0b428SJohn Marino {
39*05a0b428SJohn Marino union {
40*05a0b428SJohn Marino long double e;
41*05a0b428SJohn Marino struct ieee_ext ieee;
42*05a0b428SJohn Marino uint32_t bits[3];
43*05a0b428SJohn Marino } u;
44*05a0b428SJohn Marino
45*05a0b428SJohn Marino _scan_nan(u.bits, 3, s);
46*05a0b428SJohn Marino u.ieee.ext_exp = 0x7fff;
47*05a0b428SJohn Marino u.ieee.ext_frach |= 0xc0000000; /* make it a quiet NaN */
48*05a0b428SJohn Marino
49*05a0b428SJohn Marino return (u.e);
50*05a0b428SJohn Marino }
51