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| author | Paul Eggert <eggert@cs.ucla.edu> | 2024-05-12 14:22:58 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2024-05-18 10:23:51 -0700 |
| commit | 88b0bb4db9aaecff8b01e81726b911fa5d02b2fb (patch) | |
| tree | 8ac3e75bba0a9082a94e7c3a03cd8b590f07a97d /lib/stdc_leading_zeros.c | |
| parent | 08550d058f028e0819ba6a72e9a53c0bc789257e (diff) | |
| download | emacs-88b0bb4db9aaecff8b01e81726b911fa5d02b2fb.tar.gz emacs-88b0bb4db9aaecff8b01e81726b911fa5d02b2fb.tar.bz2 emacs-88b0bb4db9aaecff8b01e81726b911fa5d02b2fb.zip | |
Prefer stdbit.h to count-one-bits.h etc
C23's <stdbit.h> in the long run should be better supported than
Gnulib's count-one-bits.h and similar headers, so switch to the
C23 primitives, with a Gnulib fallback for platforms lacking C23.
* admin/merge-gnulib (GNULIB_MODULES): Remove count-leading-zeros,
count-one-bits, count-trailing-zeros. Add stdc_bit_width,
stdc_count_ones, stdc_trailing_zeros.
* lib/count-leading-zeros.c, lib/count-leading-zeros.h:
* lib/count-one-bits.c, lib/count-one-bits.h:
* lib/count-trailing-zeros.c, lib/count-trailing-zeros.h: Remove.
* lib/stdbit.c, lib/stdbit.in.h, lib/stdc_bit_width.c:
* lib/stdc_count_ones.c, lib/stdc_leading_zeros.c:
* lib/stdc_trailing_zeros.c, m4/stdbit_h.m4:
New files, copied from Gnulib.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* src/data.c: Do not include count-one-bits.h, count-trailing-zeros.h.
Instead, rely on lisp.h including stdbit.h.
(Flogcount, Fbool_vector_count_population)
(Fbool_vector_count_consecutive): Use stdbit.h macros instead of
count-one-bits.h and count-trailing-zeros.h macros.
(shift_right_ull, count_one_bits_word, pre_value)
(count_trailing_zero_bits): Remove; no longer needed.
* src/lisp.h: Include stdbit.h instead of count-leading-zeros.h.
(elogb): Use stdbit.h macro instead of count-leading-zeros.h macro.
Diffstat (limited to 'lib/stdc_leading_zeros.c')
| -rw-r--r-- | lib/stdc_leading_zeros.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/stdc_leading_zeros.c b/lib/stdc_leading_zeros.c new file mode 100644 index 00000000000..45695e51aa8 --- /dev/null +++ b/lib/stdc_leading_zeros.c @@ -0,0 +1,20 @@ +/* stdc_leading_zeros_* functions. + Copyright (C) 2024 Free Software Foundation, Inc. + + This file 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. + + This file 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 this program. If not, see <https://www.gnu.org/licenses/>. */ + +#include <config.h> + +#define _GL_STDC_LEADING_ZEROS_INLINE _GL_EXTERN_INLINE +#include <stdbit.h> |