float.h revision 176826
1112158Sdas/*- 2112158Sdas * Copyright (c) 1989 Regents of the University of California. 3112158Sdas * All rights reserved. 4112158Sdas * 5112158Sdas * Redistribution and use in source and binary forms, with or without 6112158Sdas * modification, are permitted provided that the following conditions 7112158Sdas * are met: 8112158Sdas * 1. Redistributions of source code must retain the above copyright 9112158Sdas * notice, this list of conditions and the following disclaimer. 10112158Sdas * 2. Redistributions in binary form must reproduce the above copyright 11112158Sdas * notice, this list of conditions and the following disclaimer in the 12112158Sdas * documentation and/or other materials provided with the distribution. 13112158Sdas * 4. Neither the name of the University nor the names of its contributors 14112158Sdas * may be used to endorse or promote products derived from this software 15112158Sdas * without specific prior written permission. 16112158Sdas * 17112158Sdas * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18112158Sdas * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19112158Sdas * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20112158Sdas * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21112158Sdas * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22112158Sdas * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23112158Sdas * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24112158Sdas * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25112158Sdas * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26112158Sdas * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27112158Sdas * SUCH DAMAGE. 28112158Sdas * 29165743Sdas * from: @(#)float.h 7.1 (Berkeley) 5/8/90 30165743Sdas * $FreeBSD: head/sys/i386/include/float.h 176826 2008-03-05 11:17:20Z bde $ 31112158Sdas */ 32112158Sdas 33112158Sdas#ifndef _MACHINE_FLOAT_H_ 34112158Sdas#define _MACHINE_FLOAT_H_ 1 35112158Sdas 36112158Sdas#include <sys/cdefs.h> 37112158Sdas 38112158Sdas__BEGIN_DECLS 39112158Sdasextern int __flt_rounds(void); 40112158Sdas__END_DECLS 41112158Sdas 42112158Sdas#define FLT_RADIX 2 /* b */ 43112158Sdas#define FLT_ROUNDS __flt_rounds() 44112158Sdas#if __ISO_C_VISIBLE >= 1999 45112158Sdas#define FLT_EVAL_METHOD (-1) /* i387 semantics are...interesting */ 46112158Sdas#define DECIMAL_DIG 21 /* max precision in decimal digits */ 47112158Sdas#endif 48112158Sdas 49112158Sdas#define FLT_MANT_DIG 24 /* p */ 50112158Sdas#define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */ 51112158Sdas#define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */ 52112158Sdas#define FLT_MIN_EXP (-125) /* emin */ 53112158Sdas#define FLT_MIN 1.17549435E-38F /* b**(emin-1) */ 54112158Sdas#define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */ 55112158Sdas#define FLT_MAX_EXP 128 /* emax */ 56112158Sdas#define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */ 57112158Sdas#define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */ 58112158Sdas 59112158Sdas#define DBL_MANT_DIG 53 60112158Sdas#define DBL_EPSILON 2.2204460492503131E-16 61112158Sdas#define DBL_DIG 15 62112158Sdas#define DBL_MIN_EXP (-1021) 63112158Sdas#define DBL_MIN 2.2250738585072014E-308 64165743Sdas#define DBL_MIN_10_EXP (-307) 65165743Sdas#define DBL_MAX_EXP 1024 66112158Sdas#define DBL_MAX 1.7976931348623157E+308 67112158Sdas#define DBL_MAX_10_EXP 308 68112158Sdas 69112158Sdas#define LDBL_MANT_DIG 64 70112158Sdas#define LDBL_EPSILON 1.0842021724855044340E-19L 71112158Sdas#define LDBL_DIG 18 72112158Sdas#define LDBL_MIN_EXP (-16381) 73227753Stheraven#define LDBL_MIN 3.3621031431120935063E-4932L 74227753Stheraven#define LDBL_MIN_10_EXP (-4931) 75112158Sdas#define LDBL_MAX_EXP 16384 76227753Stheraven#define LDBL_MAX 1.1897314953572317650E+4932L 77112158Sdas#define LDBL_MAX_10_EXP 4932 78112158Sdas#endif /* _MACHINE_FLOAT_H_ */ 79112158Sdas