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 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