1 /*- 2 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/lib/msun/src/s_signbit.c,v 1.1 2004/07/19 08:16:10 das Exp $ 27 */ 28 29 #include <openlibm_math.h> 30 31 #include "fpmath.h" 32 #include "math_private.h" 33 34 OLM_DLLEXPORT int 35 __signbit(double d) 36 { 37 union IEEEd2bits u; 38 39 u.d = d; 40 return (u.bits.sign); 41 } 42 43 OLM_DLLEXPORT int 44 __signbitf(float f) 45 { 46 union IEEEf2bits u; 47 48 u.f = f; 49 return (u.bits.sign); 50 } 51 52 #ifdef LONG_DOUBLE 53 OLM_DLLEXPORT int 54 __signbitl(long double e) 55 { 56 union IEEEl2bits u; 57 58 u.e = e; 59 return (u.bits.sign); 60 } 61 #endif 62