projects / thirdparty / glibc.git / blame
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|---|---|---|
| 0ecb606c JJ |
1 | /* Copyright (C) 1997,1998,1999,2000,2003,2004,2006 |
| 2 | Free Software Foundation, Inc. | |
| ec751a23 UD |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| ec751a23 UD |
9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| ec751a23 | 14 | |
| 41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| ec751a23 UD |
19 | |
| 20 | #if !defined _MATH_H && !defined _COMPLEX_H | |
| 21 | # error "Never use <bits/mathdef.h> directly; include <math.h> instead" | |
| 22 | #endif | |
| 23 | ||
| 24 | ||
| 25 | /* FIXME! This file describes properties of the compiler, not the machine; | |
| 26 | it should not be part of libc! | |
| 27 | ||
| 28 | FIXME! This file does not deal with the -fshort-double option of | |
| 29 | gcc! */ | |
| 30 | ||
| b85697f6 UD |
31 | #if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF |
| 32 | # define _MATH_H_MATHDEF 1 | |
| 33 | ||
| ec751a23 UD |
34 | # ifdef __GNUC__ |
| 35 | # if __STDC__ == 1 | |
| 36 | ||
| 37 | /* In GNU or ANSI mode, gcc leaves `float' expressions as-is. */ | |
| 38 | typedef float float_t; /* `float' expressions are evaluated as | |
| 39 | `float'. */ | |
| 40 | typedef double double_t; /* `double' expressions are evaluated as | |
| 41 | `double'. */ | |
| 42 | ||
| ec751a23 UD |
43 | # else |
| 44 | ||
| 45 | /* For `gcc -traditional', `float' expressions are evaluated as `double'. */ | |
| 46 | typedef double float_t; /* `float' expressions are evaluated as | |
| 47 | `double'. */ | |
| 48 | typedef double double_t; /* `double' expressions are evaluated as | |
| 49 | `double'. */ | |
| 50 | ||
| ec751a23 UD |
51 | # endif |
| 52 | # else | |
| 53 | ||
| 54 | /* Wild guess at types for float_t and double_t. */ | |
| 55 | typedef double float_t; | |
| 56 | typedef double double_t; | |
| 57 | ||
| ec751a23 UD |
58 | # endif |
| 59 | ||
| 60 | /* The values returned by `ilogb' for 0 and NaN respectively. */ | |
| 417bafec UD |
61 | # define FP_ILOGB0 (-2147483647) |
| 62 | # define FP_ILOGBNAN (2147483647) | |
| ec751a23 | 63 | |
| ec751a23 | 64 | #endif /* ISO C99 */ |