Current File : //glibc-2.29/sysdeps/i386/fpu/math-tests-snan.h
/* Configuration for math tests: sNaN support. 32-bit x86 version.
Copyright (C) 2013-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef I386_MATH_TESTS_SNAN_H
#define I386_MATH_TESTS_SNAN_H 1
/* On 32-bit x86, versions of GCC up to at least 4.8 are happy to use
FPU load instructions for sNaN values, and loading a float or
double sNaN value will already raise an INVALID exception as well
as turn the sNaN into a qNaN, rendering certain tests infeasible in
this scenario. <https://gcc.gnu.org/PR56831>. */
#define SNAN_TESTS_float 0
#define SNAN_TESTS_double 0
#define SNAN_TESTS_long_double 1
/* Before GCC 7, there is no built-in function to provide a __float128
sNaN, so most sNaN tests for this type cannot work. */
#if __GNUC_PREREQ (7, 0)
# define SNAN_TESTS_float128 1
#else
# define SNAN_TESTS_float128 0
#endif
#endif /* math-tests-snan.h. */
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