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 * 3. 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 * $FreeBSD$
33 */
34
35 #ifndef _MACHINE_FLOAT_H_
36 #define _MACHINE_FLOAT_H_ 1
37
38 #include <sys/cdefs.h>
39
40 __BEGIN_DECLS
41 extern 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 #if __ISO_C_VISIBLE >= 1999
52 #define FLT_EVAL_METHOD 0
53 #define DECIMAL_DIG 17
54 #endif
55
56 #define FLT_MANT_DIG 24 /* p */
57 #define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */
58 #define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */
59 #define FLT_MIN_EXP (-125) /* emin */
60 #define FLT_MIN 1.17549435E-38F /* b**(emin-1) */
61 #define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */
62 #define FLT_MAX_EXP 128 /* emax */
63 #define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */
64 #define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */
65 #if __ISO_C_VISIBLE >= 2011
66 #define FLT_TRUE_MIN 1.40129846E-45F /* b**(emin-p) */
67 #define FLT_DECIMAL_DIG 9 /* ceil(1+p*log10(b)) */
68 #define FLT_HAS_SUBNORM 1
69 #endif /* __ISO_C_VISIBLE >= 2011 */
70
71 #define DBL_MANT_DIG 53
72 #define DBL_EPSILON 2.2204460492503131E-16
73 #define DBL_DIG 15
74 #define DBL_MIN_EXP (-1021)
75 #define DBL_MIN 2.2250738585072014E-308
76 #define DBL_MIN_10_EXP (-307)
77 #define DBL_MAX_EXP 1024
78 #define DBL_MAX 1.7976931348623157E+308
79 #define DBL_MAX_10_EXP 308
80 #if __ISO_C_VISIBLE >= 2011
81 #define DBL_TRUE_MIN 4.9406564584124654E-324
82 #define DBL_DECIMAL_DIG 17
83 #define DBL_HAS_SUBNORM 1
84 #endif /* __ISO_C_VISIBLE >= 2011 */
85
86 #define LDBL_MANT_DIG DBL_MANT_DIG
87 #define LDBL_EPSILON ((long double)DBL_EPSILON)
88 #define LDBL_DIG DBL_DIG
89 #define LDBL_MIN_EXP DBL_MIN_EXP
90 #define LDBL_MIN ((long double)DBL_MIN)
91 #define LDBL_MIN_10_EXP DBL_MIN_10_EXP
92 #define LDBL_MAX_EXP DBL_MAX_EXP
93 #define LDBL_MAX ((long double)DBL_MAX)
94 #define LDBL_MAX_10_EXP DBL_MAX_10_EXP
95 #if __ISO_C_VISIBLE >= 2011
96 #define LDBL_TRUE_MIN ((long double)DBL_TRUE_MIN)
97 #define LDBL_DECIMAL_DIG DBL_DECIMAL_DIG
98 #define LDBL_HAS_SUBNORM DBL_HAS_SUBNORM
99 #endif /* __ISO_C_VISIBLE >= 2011 */
100
101 #endif /* _MACHINE_FLOAT_H_ */
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