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60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/* Copyright (C) 1997, 1998, 1999, 2000, 2004, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#if !defined _MATH_H && !defined _COMPLEX_H
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# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
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#endif
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#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
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# define _MATH_H_MATHDEF 1
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# if defined __FLT_EVAL_METHOD__ && __FLT_EVAL_METHOD__ == 0
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/* When using -mfpmath=sse, values are computed with the precission of the
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used type. */
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typedef float float_t; /* `float' expressions are evaluated as `float'. */
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typedef double double_t; /* `double' expressions are evaluated as
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`double'. */
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# else
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/* The ix87 FPUs evaluate all values in the 80 bit floating-point format
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which is also available for the user as `long double'. Therefore we
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define: */
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typedef long double float_t; /* `float' expressions are evaluated as
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`long double'. */
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typedef long double double_t; /* `double' expressions are evaluated as
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`long double'. */
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# endif
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/* The values returned by `ilogb' for 0 and NaN respectively. */
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# define FP_ILOGB0 (-2147483647 - 1)
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# define FP_ILOGBNAN (-2147483647 - 1)
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/* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
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builtins are supported. */
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# if __FP_FAST_FMA
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# define FP_FAST_FMA 1
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# endif
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# if __FP_FAST_FMAF
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# define FP_FAST_FMAF 1
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# endif
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# if __FP_FAST_FMAL
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# define FP_FAST_FMAL 1
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# endif
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#endif /* ISO C99 */
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