diff options
Diffstat (limited to 'sysdeps/x86/bits')
| -rw-r--r-- | sysdeps/x86/bits/mathdef.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/x86/bits/mathdef.h b/sysdeps/x86/bits/mathdef.h new file mode 100644 index 0000000000..c202ad5928 --- /dev/null +++ b/sysdeps/x86/bits/mathdef.h @@ -0,0 +1,59 @@ +/* Copyright (C) 2001-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#if !defined _MATH_H && !defined _COMPLEX_H +# error "Never use <bits/mathdef.h> directly; include <math.h> instead" +#endif + +#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF +# define _MATH_H_MATHDEF 1 + +# if defined __x86_64__ || (defined __FLT_EVAL_METHOD__ && __FLT_EVAL_METHOD__ == 0) +/* The x86-64 architecture computes values with the precission of the + used type. Similarly for -m32 -mfpmath=sse. */ +typedef float float_t; /* `float' expressions are evaluated as `float'. */ +typedef double double_t; /* `double' expressions are evaluated + as `double'. */ +# else +/* The ix87 FPUs evaluate all values in the 80 bit floating-point format + which is also available for the user as `long double'. Therefore we + define: */ +typedef long double float_t; /* `float' expressions are evaluated as + `long double'. */ +typedef long double double_t; /* `double' expressions are evaluated as + `long double'. */ +# endif + +/* The values returned by `ilogb' for 0 and NaN respectively. */ +# define FP_ILOGB0 (-2147483647 - 1) +# define FP_ILOGBNAN (-2147483647 - 1) + +/* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l} + builtins are supported. */ +# if __FP_FAST_FMA +# define FP_FAST_FMA 1 +# endif + +# if __FP_FAST_FMAF +# define FP_FAST_FMAF 1 +# endif + +# if __FP_FAST_FMAL +# define FP_FAST_FMAL 1 +# endif + +#endif /* ISO C99 */ |