1/* $FreeBSD$ */ 2/* From: NetBSD: float.h,v 1.6 1997/07/17 21:36:03 thorpej Exp */ 3 4/*- 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#ifndef _MACHINE_FLOAT_H_ 34#define _MACHINE_FLOAT_H_ 35 36#include <sys/cdefs.h> 37 38__BEGIN_DECLS 39extern int __flt_rounds(void); 40__END_DECLS 41 42#define FLT_RADIX 2 /* b */ 43#define FLT_ROUNDS __flt_rounds() 44#if __ISO_C_VISIBLE >= 1999 45#define FLT_EVAL_METHOD 0 /* no promotions */ 46#define DECIMAL_DIG 21 /* max precision in decimal digits */ 47#endif 48 49#define FLT_MANT_DIG 24 /* p */ 50#define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */ 51#define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */ 52#define FLT_MIN_EXP (-125) /* emin */ 53#define FLT_MIN 1.17549435E-38F /* b**(emin-1) */ 54#define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */ 55#define FLT_MAX_EXP 128 /* emax */ 56#define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */ 57#define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */ 58#if __ISO_C_VISIBLE >= 2011 59#define FLT_TRUE_MIN 1.40129846E-45F /* b**(emin-p) */ 60#define FLT_DECIMAL_DIG 9 /* ceil(1+p*log10(b)) */ 61#define FLT_HAS_SUBNORM 1 62#endif /* __ISO_C_VISIBLE >= 2011 */ 63 64#define DBL_MANT_DIG 53 65#define DBL_EPSILON 2.2204460492503131E-16 66#define DBL_DIG 15 67#define DBL_MIN_EXP (-1021) 68#define DBL_MIN 2.2250738585072014E-308 69#define DBL_MIN_10_EXP (-307) 70#define DBL_MAX_EXP 1024 71#define DBL_MAX 1.7976931348623157E+308 72#define DBL_MAX_10_EXP 308 73#if __ISO_C_VISIBLE >= 2011 74#define DBL_TRUE_MIN 4.9406564584124654E-324 75#define DBL_DECIMAL_DIG 17 76#define DBL_HAS_SUBNORM 1 77#endif /* __ISO_C_VISIBLE >= 2011 */ 78 79#define LDBL_MANT_DIG 64 80#define LDBL_EPSILON 1.0842021724855044340E-19L 81#define LDBL_DIG 18 82#define LDBL_MIN_EXP (-16381) 83#define LDBL_MIN 3.3621031431120935063E-4932L 84#define LDBL_MIN_10_EXP (-4931) 85#define LDBL_MAX_EXP 16384 86#define LDBL_MAX 1.1897314953572317650E+4932L 87#define LDBL_MAX_10_EXP 4932 88#if __ISO_C_VISIBLE >= 2011 89#define LDBL_TRUE_MIN 3.6451995318824746025E-4951L 90#define LDBL_DECIMAL_DIG 21 91#define LDBL_HAS_SUBNORM 1 92#endif /* __ISO_C_VISIBLE >= 2011 */ 93 94#endif /* _MACHINE_FLOAT_H_ */ 95