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Member "gnuastro-0.9/bootstrapped/tests/isnanf-nolibm.h" (17 Apr 2019, 1474 Bytes) of package /linux/privat/gnuastro-0.9.tar.lz:

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    1 /* Test for NaN that does not need libm.
    2    Copyright (C) 2007-2019 Free Software Foundation, Inc.
    3 
    4    This program is free software: you can redistribute it and/or modify
    5    it under the terms of the GNU General Public License as published by
    6    the Free Software Foundation; either version 3 of the License, or
    7    (at your option) any later version.
    8 
    9    This program 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
   12    GNU General Public License for more details.
   13 
   14    You should have received a copy of the GNU General Public License
   15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
   16 
   17 #if HAVE_ISNANF_IN_LIBC
   18 /* Get declaration of isnan macro or (older) isnanf function.  */
   19 # include <math.h>
   20 # if __GNUC__ >= 4
   21    /* GCC 4.0 and newer provides three built-ins for isnan.  */
   22 #  undef isnanf
   23 #  define isnanf(x) __builtin_isnanf ((float)(x))
   24 # elif defined isnan
   25 #  undef isnanf
   26 #  define isnanf(x) isnan ((float)(x))
   27 # else
   28    /* Get declaration of isnanf(), if not declared in <math.h>.  */
   29 #  if defined __sgi
   30    /* We can't include <ieeefp.h>, because it conflicts with our definition of
   31       isnand.  Therefore declare isnanf separately.  */
   32 extern int isnanf (float x);
   33 #  endif
   34 # endif
   35 #else
   36 /* Test whether X is a NaN.  */
   37 # undef isnanf
   38 # define isnanf rpl_isnanf
   39 extern int isnanf (float x);
   40 #endif