float.h revision 169689
1139731Simp/*- 24Srgrimes * Copyright (c) 1989 Regents of the University of California. 34Srgrimes * All rights reserved. 44Srgrimes * 54Srgrimes * Redistribution and use in source and binary forms, with or without 64Srgrimes * modification, are permitted provided that the following conditions 74Srgrimes * are met: 84Srgrimes * 1. Redistributions of source code must retain the above copyright 94Srgrimes * notice, this list of conditions and the following disclaimer. 104Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 114Srgrimes * notice, this list of conditions and the following disclaimer in the 124Srgrimes * documentation and/or other materials provided with the distribution. 134Srgrimes * 4. Neither the name of the University nor the names of its contributors 144Srgrimes * may be used to endorse or promote products derived from this software 154Srgrimes * without specific prior written permission. 164Srgrimes * 174Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 184Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 194Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 204Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 214Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 224Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 234Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 244Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 254Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 264Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 274Srgrimes * SUCH DAMAGE. 284Srgrimes * 29621Srgrimes * from: @(#)float.h 7.1 (Berkeley) 5/8/90 3050477Speter * $FreeBSD: head/sys/amd64/include/float.h 139731 2005-01-05 20:17:21Z imp $ 314Srgrimes */ 324Srgrimes 33719Swollman#ifndef _MACHINE_FLOAT_H_ 34719Swollman#define _MACHINE_FLOAT_H_ 1 35719Swollman 36128629Sdas#include <sys/cdefs.h> 37128629Sdas 38132383Sdas__BEGIN_DECLS 39132383Sdasextern int __flt_rounds(void); 40132383Sdas__END_DECLS 41132383Sdas 424Srgrimes#define FLT_RADIX 2 /* b */ 43132383Sdas#define FLT_ROUNDS __flt_rounds() 44128629Sdas#if __ISO_C_VISIBLE >= 1999 45110566Smike#define FLT_EVAL_METHOD (-1) /* i387 semantics are...interesting */ 46110566Smike#define DECIMAL_DIG 21 /* max precision in decimal digits */ 47128629Sdas#endif 484Srgrimes 494Srgrimes#define FLT_MANT_DIG 24 /* p */ 504Srgrimes#define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */ 514Srgrimes#define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */ 5280Snate#define FLT_MIN_EXP (-125) /* emin */ 534Srgrimes#define FLT_MIN 1.17549435E-38F /* b**(emin-1) */ 5480Snate#define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */ 554Srgrimes#define FLT_MAX_EXP 128 /* emax */ 564Srgrimes#define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */ 574Srgrimes#define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */ 584Srgrimes 594Srgrimes#define DBL_MANT_DIG 53 604Srgrimes#define DBL_EPSILON 2.2204460492503131E-16 614Srgrimes#define DBL_DIG 15 6280Snate#define DBL_MIN_EXP (-1021) 6379Snate#define DBL_MIN 2.2250738585072014E-308 6480Snate#define DBL_MIN_10_EXP (-307) 654Srgrimes#define DBL_MAX_EXP 1024 6679Snate#define DBL_MAX 1.7976931348623157E+308 674Srgrimes#define DBL_MAX_10_EXP 308 684Srgrimes 69105910Simp#define LDBL_MANT_DIG 64 70105910Simp#define LDBL_EPSILON 1.0842021724855044340E-19L 71105910Simp#define LDBL_DIG 18 72105910Simp#define LDBL_MIN_EXP (-16381) 73105910Simp#define LDBL_MIN 3.3621031431120935063E-4932L 74105910Simp#define LDBL_MIN_10_EXP (-4931) 75105910Simp#define LDBL_MAX_EXP 16384 76105910Simp#define LDBL_MAX 1.1897314953572317650E+4932L 77105910Simp#define LDBL_MAX_10_EXP 4932 78719Swollman#endif /* _MACHINE_FLOAT_H_ */ 79