modernc.org/cc@v1.0.1/v2/headers/linux_arm/usr/include/arm-linux-gnueabihf/bits/huge_vall.h (about)

     1  /* Default `HUGE_VALL' constant.
     2     Used by <stdlib.h> and <math.h> functions for overflow.
     3     Copyright (C) 1992-2016 Free Software Foundation, Inc.
     4     This file is part of the GNU C Library.
     5  
     6     The GNU C Library is free software; you can redistribute it and/or
     7     modify it under the terms of the GNU Lesser General Public
     8     License as published by the Free Software Foundation; either
     9     version 2.1 of the License, or (at your option) any later version.
    10  
    11     The GNU C Library is distributed in the hope that it will be useful,
    12     but WITHOUT ANY WARRANTY; without even the implied warranty of
    13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    14     Lesser General Public License for more details.
    15  
    16     You should have received a copy of the GNU Lesser General Public
    17     License along with the GNU C Library; if not, see
    18     <http://www.gnu.org/licenses/>.  */
    19  
    20  #ifndef _MATH_H
    21  #error "Never use <bits/huge_vall.h> directly; include <math.h> instead."
    22  #endif
    23  
    24  #if __GNUC_PREREQ(3,3)
    25  #define HUGE_VALL	(__builtin_huge_vall())
    26  #else
    27  #define HUGE_VALL	((long double) HUGE_VAL)
    28  #endif