2 * Copyright (c) 1992, 1993, 2001
3 * The Regents of the University of California. All rights reserved.
5 * This software was developed by the Computer Systems Engineering group
6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
7 * contributed to Berkeley.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)float.h 8.1 (Berkeley) 6/11/93
34 * from: NetBSD: float.h,v 1.3 2001/09/21 20:48:02 eeh Exp
38 #ifndef _MACHINE_FLOAT_H_
39 #define _MACHINE_FLOAT_H_
41 #include <sys/cdefs.h>
44 extern int __flt_rounds(void);
47 #define FLT_RADIX 2 /* b */
48 #define FLT_ROUNDS __flt_rounds()
49 #if __ISO_C_VISIBLE >= 1999
50 #define FLT_EVAL_METHOD 0 /* no promotion */
51 #define DECIMAL_DIG 36 /* max precision in decimal digits */
54 #define FLT_MANT_DIG 24 /* p */
55 #define FLT_EPSILON 1.19209290E-7F /* b**(1-p) */
56 #define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */
57 #define FLT_MIN_EXP (-125) /* emin */
58 #define FLT_MIN 1.17549435E-38F /* b**(emin-1) */
59 #define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */
60 #define FLT_MAX_EXP 128 /* emax */
61 #define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */
62 #define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */
63 #if __ISO_C_VISIBLE >= 2011
64 #define FLT_TRUE_MIN 1.40129846E-45F /* b**(emin-p) */
65 #define FLT_DECIMAL_DIG 9 /* ceil(1+p*log10(b)) */
66 #define FLT_HAS_SUBNORM 1
67 #endif /* __ISO_C_VISIBLE >= 2011 */
69 #define DBL_MANT_DIG 53
70 #define DBL_EPSILON 2.2204460492503131E-16
72 #define DBL_MIN_EXP (-1021)
73 #define DBL_MIN 2.2250738585072014E-308
74 #define DBL_MIN_10_EXP (-307)
75 #define DBL_MAX_EXP 1024
76 #define DBL_MAX 1.7976931348623157E+308
77 #define DBL_MAX_10_EXP 308
78 #if __ISO_C_VISIBLE >= 2011
79 #define DBL_TRUE_MIN 4.9406564584124654E-324
80 #define DBL_DECIMAL_DIG 17
81 #define DBL_HAS_SUBNORM 1
82 #endif /* __ISO_C_VISIBLE >= 2011 */
84 #define LDBL_MANT_DIG 113
85 #define LDBL_EPSILON 1.925929944387235853055977942584927319E-34L
87 #define LDBL_MIN_EXP (-16381)
88 #define LDBL_MIN 3.362103143112093506262677817321752603E-4932L
89 #define LDBL_MIN_10_EXP (-4931)
90 #define LDBL_MAX_EXP (+16384)
91 #define LDBL_MAX 1.189731495357231765085759326628007016E+4932L
92 #define LDBL_MAX_10_EXP (+4932)
93 #if __ISO_C_VISIBLE >= 2011
94 #define LDBL_TRUE_MIN 6.475175119438025110924438958227646552E-4966L
95 #define LDBL_DECIMAL_DIG 36
96 #define LDBL_HAS_SUBNORM 1
97 #endif /* __ISO_C_VISIBLE >= 2011 */
99 #endif /* _MACHINE_FLOAT_H_ */