1 /* Configuration for math tests: sNaN support. 32-bit x86 version.
2 Copyright (C) 2013-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
19 #ifndef I386_MATH_TESTS_SNAN_H
20 #define I386_MATH_TESTS_SNAN_H 1
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
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
36 # define SNAN_TESTS_float128 0
39 #endif /* math-tests-snan.h. */