kernel: Adjust some comments to the unionfs removal.
[dragonfly.git] / include / float.h
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3b4695cc 1/*-
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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.
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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
6ff43c94 30 * $FreeBSD: head/sys/x86/include/float.h 235939 2012-05-24 21:44:46Z obrien $
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31 */
32
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33#ifndef _FLOAT_H_
34#define _FLOAT_H_
fc3f9779 35
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36#include <sys/cdefs.h>
37
38__BEGIN_DECLS
6ff43c94 39extern int __flt_rounds(void);
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40__END_DECLS
41
fc3f9779 42#define FLT_RADIX 2 /* b */
6ff43c94 43#define FLT_ROUNDS __flt_rounds()
cb6534d1 44#if __ISO_C_VISIBLE >= 1999
6ff43c94 45#ifdef __LP64__
cb6534d1 46#define FLT_EVAL_METHOD 0 /* no promotions */
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47#else
48#define FLT_EVAL_METHOD (-1) /* i387 semantics are...interesting */
49#endif
fc3f9779 50#define DECIMAL_DIG 21 /* max precision in decimal digits */
cb6534d1 51#endif
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52
53#define FLT_MANT_DIG 24 /* p */
54#define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */
55#define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */
56#define FLT_MIN_EXP (-125) /* emin */
57#define FLT_MIN 1.17549435E-38F /* b**(emin-1) */
58#define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */
59#define FLT_MAX_EXP 128 /* emax */
60#define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */
61#define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */
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62#if __ISO_C_VISIBLE >= 2011
63#define FLT_TRUE_MIN 1.40129846E-45F /* b**(emin-p) */
64#define FLT_DECIMAL_DIG 9 /* ceil(1+p*log10(b)) */
65#define FLT_HAS_SUBNORM 1
66#endif /* __ISO_C_VISIBLE >= 2011 */
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67
68#define DBL_MANT_DIG 53
69#define DBL_EPSILON 2.2204460492503131E-16
70#define DBL_DIG 15
71#define DBL_MIN_EXP (-1021)
72#define DBL_MIN 2.2250738585072014E-308
73#define DBL_MIN_10_EXP (-307)
74#define DBL_MAX_EXP 1024
75#define DBL_MAX 1.7976931348623157E+308
76#define DBL_MAX_10_EXP 308
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77#if __ISO_C_VISIBLE >= 2011
78#define DBL_TRUE_MIN 4.9406564584124654E-324
79#define DBL_DECIMAL_DIG 17
80#define DBL_HAS_SUBNORM 1
81#endif /* __ISO_C_VISIBLE >= 2011 */
fc3f9779 82
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83#define LDBL_MANT_DIG 64
84#define LDBL_EPSILON 1.0842021724855044340E-19L
85#define LDBL_DIG 18
86#define LDBL_MIN_EXP (-16381)
87#define LDBL_MIN 3.3621031431120935063E-4932L
88#define LDBL_MIN_10_EXP (-4931)
89#define LDBL_MAX_EXP 16384
90#define LDBL_MAX 1.1897314953572317650E+4932L
91#define LDBL_MAX_10_EXP 4932
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92#if __ISO_C_VISIBLE >= 2011
93#define LDBL_TRUE_MIN 3.6451995318824746025E-4951L
94#define LDBL_DECIMAL_DIG 21
95#define LDBL_HAS_SUBNORM 1
96#endif /* __ISO_C_VISIBLE >= 2011 */
97
98#endif /* _FLOAT_H_ */