1  /* Configuration for math tests: sNaN support.  32-bit x86 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 I386_MATH_TESTS_SNAN_H
      20  #define I386_MATH_TESTS_SNAN_H 1
      21  
      22  /* On 32-bit x86, versions of GCC up to at least 4.8 are happy to use
      23     FPU load instructions for sNaN values, and loading a float or
      24     double sNaN value will already raise an INVALID exception as well
      25     as turn the sNaN into a qNaN, rendering certain tests infeasible in
      26     this scenario.  <https://gcc.gnu.org/PR56831>.  */
      27  #define SNAN_TESTS_float	0
      28  #define SNAN_TESTS_double	0
      29  #define SNAN_TESTS_long_double	1
      30  
      31  /* Before GCC 7, there is no built-in function to provide a __float128
      32     sNaN, so most sNaN tests for this type cannot work.  */
      33  #if __GNUC_PREREQ (7, 0)
      34  # define SNAN_TESTS_float128	1
      35  #else
      36  # define SNAN_TESTS_float128	0
      37  #endif
      38  
      39  #endif /* math-tests-snan.h.  */