float.h revision 132383 
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: FreeBSD: src/sys/i386/include/float.h,v 1.8 1999/08/28 00:44:11
31 * $FreeBSD: head/sys/powerpc/include/float.h 132383 2004-07-19 08:17:25Z das $
32 */
33
34#ifndef _MACHINE_FLOAT_H_
35#define _MACHINE_FLOAT_H_ 1
36
37#include <sys/cdefs.h>
38
39__BEGIN_DECLS
40extern int __flt_rounds(void);
41__END_DECLS
42
43#define FLT_RADIX	2		/* b */
44#define FLT_ROUNDS	__flt_rounds()
45#if __ISO_C_VISIBLE >= 1999
46#define	FLT_EVAL_METHOD	1		/* operands promoted to double */
47#define	DECIMAL_DIG	35		/* max precision in decimal digits */
48#endif
49
50#define FLT_MANT_DIG	24		/* p */
51#define FLT_EPSILON	1.19209290E-07F	/* b**(1-p) */
52#define FLT_DIG		6		/* floor((p-1)*log10(b))+(b == 10) */
53#define FLT_MIN_EXP	(-125)		/* emin */
54#define FLT_MIN		1.17549435E-38F	/* b**(emin-1) */
55#define FLT_MIN_10_EXP	(-37)		/* ceil(log10(b**(emin-1))) */
56#define FLT_MAX_EXP	128		/* emax */
57#define FLT_MAX		3.40282347E+38F	/* (1-b**(-p))*b**emax */
58#define FLT_MAX_10_EXP	38		/* floor(log10((1-b**(-p))*b**emax)) */
59
60#define DBL_MANT_DIG	53
61#define DBL_EPSILON	2.2204460492503131E-16
62#define DBL_DIG		15
63#define DBL_MIN_EXP	(-1021)
64#define DBL_MIN		2.2250738585072014E-308
65#define DBL_MIN_10_EXP	(-307)
66#define DBL_MAX_EXP	1024
67#define DBL_MAX		1.7976931348623157E+308
68#define DBL_MAX_10_EXP	308
69
70#define LDBL_MANT_DIG   113
71#define LDBL_EPSILON    1.925929944387235853055977942584927319E-34L
72#define LDBL_DIG        33
73#define LDBL_MIN_EXP    (-16381)
74#define LDBL_MIN        3.362103143112093506262677817321752603E-4932L
75#define LDBL_MIN_10_EXP (-4931)
76#define LDBL_MAX_EXP    (+16384)
77#define LDBL_MAX        1.189731495357231765085759326628007016E+4932L
78#define LDBL_MAX_10_EXP (+4932)
79
80#endif /* _MACHINE_FLOAT_H_ */
81