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

     1  /* `INFINITY' constant for IEEE 754 machines.
     2     Copyright (C) 2004-2016 Free Software Foundation, Inc.
     3     This file is part of the GNU C Library.
     4  
     5     The GNU C Library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9  
    10     The GNU C Library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14  
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with the GNU C Library; if not, see
    17     <http://www.gnu.org/licenses/>.  */
    18  
    19  #ifndef _MATH_H
    20  #error "Never use <bits/inf.h> directly; include <math.h> instead."
    21  #endif
    22  
    23  /* IEEE positive infinity.  */
    24  
    25  #if __GNUC_PREREQ(3,3)
    26  #define INFINITY	(__builtin_inff())
    27  #else
    28  #define INFINITY	HUGE_VALF
    29  #endif