float.h revision 202031
1/*- 2 * Copyright (c) 1989 Regents of the University of California. 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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * from: @(#)float.h 7.1 (Berkeley) 5/8/90 30 * from: src/sys/i386/include/float.h,v 1.8 1999/08/28 00:44:11 peter 31 * JNPR: float.h,v 1.4 2006/12/02 09:53:41 katta 32 * $FreeBSD: head/sys/mips/include/float.h 202031 2010-01-10 19:50:24Z imp $ 33 */ 34 35#ifndef _MACHINE_FLOAT_H_ 36#define _MACHINE_FLOAT_H_ 1 37 38#include <sys/cdefs.h> 39 40__BEGIN_DECLS 41extern int __flt_rounds(void); 42__END_DECLS 43 44#define FLT_RADIX 2 /* b */ 45#ifdef CPU_HAVEFPU 46#define FLT_ROUNDS __flt_rounds() /* FP addition rounds to nearest */ 47#else 48#define FLT_ROUNDS -1 49#endif 50/* 51 * XXXMIPS: MIPS32 has both float and double type, so set FLT_EVAL_METHOD 52 * to 0. Check it for 64-bits systems. 53 */ 54#define FLT_EVAL_METHOD 0 55#define DECIMAL_DIG 17 56 57#define FLT_MANT_DIG 24 /* p */ 58#define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */ 59#define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */ 60#define FLT_MIN_EXP (-125) /* emin */ 61#define FLT_MIN 1.17549435E-38F /* b**(emin-1) */ 62#define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */ 63#define FLT_MAX_EXP 128 /* emax */ 64#define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */ 65#define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */ 66 67#define DBL_MANT_DIG 53 68#define DBL_EPSILON 2.2204460492503131E-16 69#define DBL_DIG 15 70#define DBL_MIN_EXP (-1021) 71#define DBL_MIN 2.2250738585072014E-308 72#define DBL_MIN_10_EXP (-307) 73#define DBL_MAX_EXP 1024 74#define DBL_MAX 1.7976931348623157E+308 75#define DBL_MAX_10_EXP 308 76 77#define LDBL_MANT_DIG DBL_MANT_DIG 78#define LDBL_EPSILON DBL_EPSILON 79#define LDBL_DIG DBL_DIG 80#define LDBL_MIN_EXP DBL_MIN_EXP 81#define LDBL_MIN DBL_MIN 82#define LDBL_MIN_10_EXP DBL_MIN_10_EXP 83#define LDBL_MAX_EXP DBL_MAX_EXP 84#define LDBL_MAX DBL_MAX 85#define LDBL_MAX_10_EXP DBL_MAX_10_EXP 86 87#endif /* _MACHINE_FLOAT_H_ */ 88