sysdeps/powerpc/math-tests-snan-cast.h

   1 /* Configuration for math tests: casts of sNaN values.  PowerPC version.
   2    Copyright (C) 2013-2023 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef POWERPC_MATH_TESTS_SNAN_CAST_H
  20 #define POWERPC_MATH_TESTS_SNAN_CAST_H 1
  21
  22 /* On PowerPC, in versions of GCC up to at least 4.7.2, a type cast --
  23    which is a IEEE 754-2008 general-computational convertFormat
  24    operation (IEEE 754-2008, 5.4.2) -- does not turn a sNaN into a
  25    qNaN (whilst raising an INVALID exception), which is contrary to
  26    IEEE 754-2008 5.1 and 7.2.  This renders certain tests infeasible
  27    in this scenario.  <https://gcc.gnu.org/PR56828>.  */
  28 #define SNAN_TESTS_TYPE_CAST    0
  29
  30 #endif /* math-tests-snan-cast.h.  */