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74eee886 | 1 | /* Copyright (C) 1997, 1998 Free Software Foundation, Inc. |
1f205a47 UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
18 | ||
74eee886 | 19 | #if !defined _MATH_H && !defined _COMPLEX_H |
fe0ec73e | 20 | # error "Never use <bits/mathdef.h> directly; include <math.h> instead" |
5107cf1d | 21 | #endif |
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22 | |
23 | /* FIXME! This file describes properties of the compiler, not the machine; | |
5107cf1d | 24 | it should not be part of libc! */ |
1f205a47 | 25 | |
74eee886 UD |
26 | #if defined __USE_ISOC9X && defined _MATH_H |
27 | # ifdef __GNUC__ | |
28 | # if __STDC__ == 1 | |
1f205a47 | 29 | |
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30 | /* In GNU or ANSI mode, gcc leaves `float' expressions as-is. */ |
31 | typedef float float_t; | |
32 | typedef double double_t; | |
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33 | |
34 | /* Signal that types stay as they were declared. */ | |
74eee886 | 35 | # define FLT_EVAL_METHOD 0 |
1f205a47 | 36 | |
fe0ec73e | 37 | /* Define `INFINITY' as value of type `float'. */ |
74eee886 | 38 | # define INFINITY HUGE_VALF |
1f205a47 | 39 | |
74eee886 | 40 | # else |
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41 | |
42 | /* For `gcc -traditional', `float' expressions are evaluated as `double'. */ | |
5107cf1d UD |
43 | typedef double float_t; |
44 | typedef double double_t; | |
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45 | |
46 | /* Signal that both types are `double'. */ | |
74eee886 | 47 | # define FLT_EVAL_METHOD 1 |
1f205a47 | 48 | |
fe0ec73e | 49 | /* Define `INFINITY' as value of type `float'. */ |
74eee886 | 50 | # define INFINITY HUGE_VALF |
1f205a47 | 51 | |
74eee886 UD |
52 | # endif |
53 | # else | |
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54 | |
55 | /* Wild guess at types for float_t and double_t. */ | |
56 | typedef double float_t; | |
57 | typedef double double_t; | |
58 | ||
59 | /* Strange compiler, we don't know how it works. */ | |
74eee886 | 60 | # define FLT_EVAL_METHOD -1 |
1f205a47 | 61 | |
fe0ec73e | 62 | /* Define `INFINITY' as value of type `float'. */ |
74eee886 | 63 | # define INFINITY HUGE_VALF |
1f205a47 | 64 | |
74eee886 | 65 | # endif |
fe0ec73e | 66 | |
74015205 | 67 | /* The values returned by `ilogb' for 0 and NaN respectively. */ |
74eee886 UD |
68 | # define FP_ILOGB0 0x80000001 |
69 | # define FP_ILOGBNAN 0x7fffffff | |
74015205 | 70 | |
fe0ec73e | 71 | /* Number of decimal digits for the `double' type. */ |
74eee886 UD |
72 | # define DECIMAL_DIG 15 |
73 | ||
74 | #endif /* ISO C 9X */ | |
75 | ||
76 | #ifndef __NO_LONG_DOUBLE_MATH | |
77 | /* Signal that we do not really have a `long double'. The disables the | |
78 | declaration of all the `long double' function variants. */ | |
79 | # define __NO_LONG_DOUBLE_MATH 1 | |
80 | #endif |