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* Prefer stdbit.h to count-one-bits.h etcPaul Eggert2024-05-181-25/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* ; Add 2024 to copyright yearsPo Lu2024-01-021-1/+1
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* ; Add 2023 to copyright years.Eli Zaretskii2023-01-011-1/+1
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* ; Add 2022 to copyright years.Eli Zaretskii2022-01-011-1/+1
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* Update from GnulibPaul Eggert2021-10-041-0/+18
| | | | | | | | | | | | | | | | | | Make the following changes by hand, and run 'admin/merge-gnulib'. * .gitignore: Add lib/malloc/*.gl.h. * admin/merge-gnulib: Copy lib/af_alg.h and lib/save-cwd.h directly from Gnulib, without worrying about Gnulib modules, as these files are special cases. (AVOIDED_MODULES): Remove malloc-posix. * lib/malloc.c, lib/realloc.c, m4/malloc.m4, m4/realloc.m4: * m4/year2038.m4: New files, copied from Gnulib. * lib/malloca.c, lib/malloca.h: * m4/close-stream.m4, m4/glibc21.m4, m4/malloca.m4: Remove. These are either no longer present in Gnulib, or are no longer needed by modules that Emacs uses. * oldXMenu/AddPane.c, oldXmenu/Addsel.c: Include XmenuInt.h first; needed for new Gnulib. * src/xmenu.c: Call emacs_abort, not abort.
* Improve support for popcount and counting trailing zeros.Paul Eggert2013-10-071-0/+7
Do this by using the Gnulib modules for this. This should generate faster code on non-GCC, non-MSC platforms, and make the code a bit more portable, at least in theory. * admin/merge-gnulib (GNULIB_MODULES): Add count-one-bits and count-trailing-zeros. * lib/count-one-bits.c, lib/count-one-bits.h: * lib/count-trailing-zeros.c, lib/count-trailing-zeros.h: * m4/count-one-bits.m4, m4/count-trailing-zeros.m4: New files, copied from gnulib. * lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate. * nt/gnulib.mk: Merge changes from lib/gnulib.mk. * src/data.c: Include <count-one-bits.h>, <count-trailing-zeros.h>. (USE_MSC_POPCOUNT, POPCOUNT_STATIC_INLINE) (NEED_GENERIC_POPCOUNT, popcount_size_t_generic) (popcount_size_t_msc, popcount_size_t_gcc): Remove; now done by Gnulib. (popcount_size_t): Now a macro that defers to Gnulib. (count_trailing_zero_bits): Return int, for consistency with Gnulib and because Emacs prefers signed to unsigned int. Don't assume that size_t is either unsigned int or unsigned long or unsigned long long. (size_t_to_host_endian): Do not assume that size_t is either exactly 32 or exactly 64 bits wide. * src/lisp.h (BITS_PER_SIZE_T): Define consistently with BITS_PER_LONG etc., so that it's now an enum constant, not a macro. No need to assume that it's either 32 or 64. Fixes: debbugs:15550