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glibc  2.9
mathdef.h
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00001 /* Copyright (C) 1997, 1998, 1999, 2000, 2004, 2006
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 /* Normally, there is no long double type and the `float' and `double'
00028    expressions are evaluated as `double'.  */
00029 typedef double float_t;            /* `float' expressions are evaluated as
00030                                `double'.  */
00031 typedef double double_t;    /* `double' expressions are evaluated as
00032                                `double'.  */
00033 
00034 /* The values returned by `ilogb' for 0 and NaN respectively.  */
00035 # define FP_ILOGB0   (-2147483647)
00036 # define FP_ILOGBNAN 2147483647
00037 
00038 #endif /* ISO C99 */