math/w_remainder_compat.c

   1 /* Copyright (C) 2011-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
   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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <math.h>
  20 #include <math_private.h>
  21 #include <math-svid-compat.h>
  22 #include <libm-alias-double.h>
  23
  24
  25 #if LIBM_SVID_COMPAT
  26 /* wrapper remainder */
  27 double
  28 __remainder (double x, double y)
  29 {
  30   if (((__builtin_expect (y == 0.0, 0) && ! isnan (x))
  31        || (__builtin_expect (isinf (x), 0) && ! isnan (y)))
  32       && _LIB_VERSION != _IEEE_)
  33     return __kernel_standard (x, y, 28); /* remainder domain */
  34
  35   return __ieee754_remainder (x, y);
  36 }
  37 libm_alias_double (__remainder, remainder)
  38 weak_alias (__remainder, drem)
  39 # ifdef NO_LONG_DOUBLE
  40 weak_alias (__remainder, dreml)
  41 # endif
  42 #endif