1/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc. 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 Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the 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 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. */ 18 19#if !defined _MATH_H && !defined _COMPLEX_H 20# error "Never use <bits/mathdef.h> directly; include <math.h> instead" 21#endif 22 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 30#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF 31# define _MATH_H_MATHDEF 1 32 33# ifdef __GNUC__ 34# if __STDC__ == 1 35 36/* In GNU or ANSI mode, gcc leaves `float' expressions as-is. */ 37typedef float float_t; /* `float' expressions are evaluated as 38 `float'. */ 39typedef double double_t; /* `double' expressions are evaluated as 40 `double'. */ 41 42/* Signal that types stay as they were declared. */ 43# define FLT_EVAL_METHOD 0 44 45/* Define `INFINITY' as value of type `float'. */ 46# define INFINITY HUGE_VALF 47 48# else 49 50/* For `gcc -traditional', `float' expressions are evaluated as `double'. */ 51typedef double float_t; /* `float' expressions are evaluated as 52 `double'. */ 53typedef double double_t; /* `double' expressions are evaluated as 54 `double'. */ 55 56/* Define `INFINITY' as value of type `float'. */ 57# define INFINITY HUGE_VALF 58 59# endif 60# else 61 62/* Wild guess at types for float_t and double_t. */ 63typedef double float_t; 64typedef double double_t; 65 66/* Define `INFINITY' as value of type `float'. */ 67# define INFINITY HUGE_VALF 68 69# endif 70 71/* The values returned by `ilogb' for 0 and NaN respectively. */ 72# define FP_ILOGB0 (-2147483647) 73# define FP_ILOGBNAN (2147483647) 74 75#endif /* ISO C99 */ 76 77#ifndef __NO_LONG_DOUBLE_MATH 78/* Signal that we do not really have a `long double'. The disables the 79 declaration of all the `long double' function variants. */ 80# define __NO_LONG_DOUBLE_MATH 1 81#endif 82