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