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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2024-04-03 16:39:17 -0300 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2024-04-04 14:29:28 -0300 |
commit | 637bfc392f406c6c77f59494ed34949a6161bceb (patch) | |
tree | 5a34cc9cca8f4f0670e1be613bf5bc66f9e80cb0 /sysdeps/i386/fpu/s_ceil.c | |
parent | 87cb1dfcd6d1acbcd695279d7abd9163a0cc64fc (diff) | |
download | glibc-637bfc392f406c6c77f59494ed34949a6161bceb.tar.gz glibc-637bfc392f406c6c77f59494ed34949a6161bceb.tar.xz glibc-637bfc392f406c6c77f59494ed34949a6161bceb.zip |
math: x86 ceill traps when FE_INEXACT is enabled (BZ 31600)
The implementations of ceil functions using x87 floating point (i386 and x86_64 long double only) traps when FE_INEXACT is enabled. Although this is a GNU extension outside the scope of the C standard, other architectures that also support traps do not show this behavior. The fix moves the implementation to a common one that holds any exceptions with a 'fnclex' (libc_feholdexcept_setround_387). Checked on x86_64-linux-gnu and i686-linux-gnu. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'sysdeps/i386/fpu/s_ceil.c')
-rw-r--r-- | sysdeps/i386/fpu/s_ceil.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sysdeps/i386/fpu/s_ceil.c b/sysdeps/i386/fpu/s_ceil.c new file mode 100644 index 0000000000..349135c5d3 --- /dev/null +++ b/sysdeps/i386/fpu/s_ceil.c @@ -0,0 +1,25 @@ +/* Return smallest integral value not less than argument. i386 version. + Copyright (C) 2024 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 + <https://www.gnu.org/licenses/>. */ + +#include <libm-alias-double.h> + +#define FUNC __ceil +#define TYPE double +#define FE_OPTION FE_UPWARD +#include "s_nearestint_387_template.c" +libm_alias_double (__ceil, ceil) |