emacs/m4/byteswap.m4, branch scratch/project Emacs is the extensible, customizable, self-documenting real-time display editor. Merge from gnulib, incorporating: 2015-01-01T19:06:53+00:00 Paul Eggert 2015-01-01T19:05:24+00:00 035f5aaa91ebd40598e0d89881bbc3cf532440a0 2015-01-01 version-etc: new year 
2015-01-01 version-etc: new year
Update copyright year to 2014 by running admin/update-copyright. 2014-01-01T07:43:34+00:00 Paul Eggert 2014-01-01T07:43:34+00:00 ba3189039adc8ec5eba5ed3e21d42019a4616b7c 






Use hardware support for byteswapping on glibc x86 etc.
2013-10-04T07:36:22+00:00

Paul Eggert

2013-10-04T07:36:22+00:00

4eed3157327f8406921658442a11af7e9d84d603

On Fedora 19 x86-64, the new bswap_64 needs 1 instruction,
whereas the old swap64 needed 30.
* admin/merge-gnulib (GNULIB_MODULES): Add byteswap.
* lib/byteswap.in.h, m4/byteswap.m4: New files, copied from Gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* src/fringe.c (init_fringe_bitmap) [WORDS_BIGENDIAN]:
* src/sound.c (le2hl, le2hs, be2hl) [!WINDOWSNT]:
Use byteswap.h's macros to swap bytes.
* src/lisp.h (swap16, swap32, swap64): Remove.
All uses replaced by bswap_16, bswap_32, bswap_64.





On Fedora 19 x86-64, the new bswap_64 needs 1 instruction,
whereas the old swap64 needed 30.
* admin/merge-gnulib (GNULIB_MODULES): Add byteswap.
* lib/byteswap.in.h, m4/byteswap.m4: New files, copied from Gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* src/fringe.c (init_fringe_bitmap) [WORDS_BIGENDIAN]:
* src/sound.c (le2hl, le2hs, be2hl) [!WINDOWSNT]:
Use byteswap.h's macros to swap bytes.
* src/lisp.h (swap16, swap32, swap64): Remove.
All uses replaced by bswap_16, bswap_32, bswap_64.