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ec751a23 | 1 | /* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. |
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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" |
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21 | #endif |
22 | ||
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23 | |
24 | /* FIXME! This file describes properties of the compiler, not the machine; | |
25 | it should not be part of libc! | |
26 | ||
27 | FIXME! This file does not deal with the -fshort-double option of | |
28 | gcc! */ | |
29 | ||
ec751a23 | 30 | #if defined __USE_ISOC99 && defined _MATH_H |
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31 | # ifdef __GNUC__ |
32 | # if __STDC__ == 1 | |
1f205a47 | 33 | |
0413b54c | 34 | /* In GNU or ANSI mode, gcc leaves `float' expressions as-is. */ |
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35 | typedef float float_t; /* `float' expressions are evaluated as |
36 | `float'. */ | |
37 | typedef double double_t; /* `double' expressions are evaluated as | |
38 | `double'. */ | |
39 | ||
40 | /* Signal that types stay as they were declared. */ | |
74eee886 | 41 | # define FLT_EVAL_METHOD 0 |
1f205a47 | 42 | |
fe0ec73e | 43 | /* Define `INFINITY' as value of type `float'. */ |
74eee886 | 44 | # define INFINITY HUGE_VALF |
1f205a47 | 45 | |
74eee886 | 46 | # else |
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47 | |
48 | /* For `gcc -traditional', `float' expressions are evaluated as `double'. */ | |
49 | typedef double float_t; /* `float' expressions are evaluated as | |
50 | `double'. */ | |
51 | typedef double double_t; /* `double' expressions are evaluated as | |
52 | `double'. */ | |
53 | ||
54 | /* Signal that both types are `double'. */ | |
74eee886 | 55 | # define FLT_EVAL_METHOD 1 |
1f205a47 | 56 | |
fe0ec73e | 57 | /* Define `INFINITY' as value of type `float'. */ |
74eee886 | 58 | # define INFINITY HUGE_VALF |
1f205a47 | 59 | |
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60 | # endif |
61 | # else | |
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62 | |
63 | /* Wild guess at types for float_t and double_t. */ | |
64 | typedef double float_t; | |
65 | typedef double double_t; | |
66 | ||
67 | /* Strange compiler, we don't know how it works. */ | |
74eee886 | 68 | # define FLT_EVAL_METHOD -1 |
1f205a47 | 69 | |
fe0ec73e | 70 | /* Define `INFINITY' as value of type `float'. */ |
74eee886 | 71 | # define INFINITY HUGE_VALF |
1f205a47 | 72 | |
74eee886 | 73 | # endif |
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74 | |
75 | /* The values returned by `ilogb' for 0 and NaN respectively. */ | |
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76 | # define FP_ILOGB0 0x80000001 |
77 | # define FP_ILOGBNAN 0x7fffffff | |
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78 | |
79 | /* Number of decimal digits for the `double' type. */ | |
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80 | # define DECIMAL_DIG 15 |
81 | ||
ec751a23 | 82 | #endif /* ISO C99 */ |
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83 | |
84 | #ifndef __NO_LONG_DOUBLE_MATH | |
85 | /* Signal that we do not really have a `long double'. The disables the | |
86 | declaration of all the `long double' function variants. */ | |
87 | # define __NO_LONG_DOUBLE_MATH 1 | |
88 | #endif |