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glibc  2.9
mathdef.h
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00001 /* Copyright (C) 1999, 2000, 2004, 2006, 2007
00002    Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #if !defined _MATH_H && !defined _COMPLEX_H
00021 # error "Never use <bits/mathdef.h> directly; include <math.h> instead"
00022 #endif
00023 
00024 #if defined  __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
00025 # define _MATH_H_MATHDEF    1
00026 
00027 /* GCC does not promote `float' values to `double'.  */
00028 typedef float float_t;             /* `float' expressions are evaluated as
00029                                `float'.  */
00030 typedef double double_t;    /* `double' expressions are evaluated as
00031                                `double'.  */
00032 
00033 /* The values returned by `ilogb' for 0 and NaN respectively.  */
00034 # define FP_ILOGB0   (-2147483647)
00035 # define FP_ILOGBNAN (2147483647)
00036 
00037 #endif /* ISO C99 */
00038 
00039 #ifndef __NO_LONG_DOUBLE_MATH
00040 /* Signal that we do not really have a `long double'.  This disables the
00041    declaration of all the `long double' function variants.  */
00042 # define __NO_LONG_DOUBLE_MATH     1
00043 #endif