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| author | Joseph Myers <joseph@codesourcery.com> | 2018-08-01 11:18:57 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2018-08-01 11:18:57 +0000 |
| commit | c0e7e2c127cf6d90c4ba86be11b09f45530bf8be (patch) | |
| tree | ac73c3e06bec6762a635cfc37847ae34a3046716 /sysdeps/powerpc/math-tests-snan-cast.h | |
| parent | b029723b80eeb018cdc404e8972f6185c047522a (diff) | |
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Move SNAN_TESTS_TYPE_CAST out of math-tests.h.
The math-tests.h header has many different macros and groups of
macros, defined using #ifndef in the generic version which is included
by architecture versions with #include_next after possibly defining
non-default versions of some of those macros.
This use of #ifndef is contrary to our normal typo-proof conventions
for macro definitions. This patch moves one of the macros,
SNAN_TESTS_TYPE_CAST, out to its own sysdeps header, to follow those
typo-proof conventions more closely.
Tested with build-many-glibcs.py.
2018-08-01 Joseph Myers <joseph@codesourcery.com>
* sysdeps/generic/math-tests-snan-cast.h: New file.
* sysdeps/powerpc/math-tests-snan-cast.h: Likewise.
* sysdeps/generic/math-tests.h: Include <math-tests-snan-cast.h>.
(SNAN_TESTS_TYPE_CAST): Do not define macro here.
* sysdeps/powerpc/math-tests.h (SNAN_TESTS_TYPE_CAST): Likewise.
Diffstat (limited to 'sysdeps/powerpc/math-tests-snan-cast.h')
| -rw-r--r-- | sysdeps/powerpc/math-tests-snan-cast.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sysdeps/powerpc/math-tests-snan-cast.h b/sysdeps/powerpc/math-tests-snan-cast.h new file mode 100644 index 0000000000..13e941d0f6 --- /dev/null +++ b/sysdeps/powerpc/math-tests-snan-cast.h @@ -0,0 +1,30 @@ +/* Configuration for math tests: casts of sNaN values. PowerPC 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 POWERPC_MATH_TESTS_SNAN_CAST_H +#define POWERPC_MATH_TESTS_SNAN_CAST_H 1 + +/* On PowerPC, in versions of GCC up to at least 4.7.2, a type cast -- + which is a IEEE 754-2008 general-computational convertFormat + operation (IEEE 754-2008, 5.4.2) -- does not turn a sNaN into a + qNaN (whilst raising an INVALID exception), which is contrary to + IEEE 754-2008 5.1 and 7.2. This renders certain tests infeasible + in this scenario. <https://gcc.gnu.org/PR56828>. */ +#define SNAN_TESTS_TYPE_CAST 0 + +#endif /* math-tests-snan-cast.h. */ |