diff options
Diffstat (limited to 'sysdeps/i386/fpu/math-tests-snan.h')
| -rw-r--r-- | sysdeps/i386/fpu/math-tests-snan.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/i386/fpu/math-tests-snan.h b/sysdeps/i386/fpu/math-tests-snan.h new file mode 100644 index 0000000000..9d30f69db0 --- /dev/null +++ b/sysdeps/i386/fpu/math-tests-snan.h @@ -0,0 +1,39 @@ +/* Configuration for math tests: sNaN support. 32-bit x86 version. + Copyright (C) 2013-2018 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. */ |