src/lib/libc/string/ffsl.c, branch release/14.4.0FreeBSD source treehttps://cgit-dev.freebsd.org/src/atom?h=release%2F14.4.02023-11-27T04:20:09Zlibc: Purge unneeded cdefs.h2023-11-27T04:20:09ZWarner Loshimp@FreeBSD.org2023-11-01T22:43:37Zurn:sha1:4025b5b527c870cf095ac9531764f4e4d3feaec2
These sys/cdefs.h are not needed. Purge them. They are mostly left-over
from the $FreeBSD$ removal. A few in libc are still required for macros
that cdefs.h defines. Keep those.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D42385
(cherry picked from commit 559a218c9b257775fb249b67945fe4a05b7a6b9f)
Remove $FreeBSD$: one-line .c pattern2023-08-16T17:54:42ZWarner Loshimp@FreeBSD.org2023-08-16T17:54:42Zurn:sha1:1d386b48a555f61cb7325543adbbb5c3f3407a66
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
lib/libc/string/ffs*.c: work around gcc warning2023-07-14T20:26:43ZRobert Clauseckerfuz@FreeBSD.org2023-07-10T22:10:52Zurn:sha1:3f5788e0ed8e85567f651ad360596b8c330af5a9
Gcc warns of infinite recursion if we use __builtin_ffs*() to
implement ffs*(). This is because gcc uses ffs() to implement
these on some platforms. Sidestep the warning by using
__builtin_ctz*() for these.
Sponsored by: FreeBSD Foundation
Reported by: jlduran@gmail.com, jhb
Fixes: ee8b0c43 (D40730)
Reviewed by: jhb, mhorne
Approved by: jhb
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D40966
lib/libc/string: replace ffs/fls implementations with clang builtins2023-07-03T20:18:27ZRobert Clauseckerfuz@FreeBSD.org2023-06-23T16:22:54Zurn:sha1:ee8b0c436d7221c25e8be3c3fe1f9da78b9d5b16
Most architectures we support (except for riscv64) have instructions
to compute these functions very quickly. Replace old code with the
ffs and clz builtin functions, allowing clang to generate good code
for all architectures.
As a consequence, toss out arm and i386 ffs() implementations.
Sponsored by: FreeBSD Foundation
Approved by: mhorne
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D40730
General further adoption of SPDX licensing ID tags.2017-11-20T19:49:47ZPedro F. Giffunipfg@FreeBSD.org2017-11-20T19:49:47Zurn:sha1:8a16b7a18f5d0b031f09832fd7752fba717e2a97
Mainly focus on files that use BSD 3-Clause license.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
Renumber clauses to reduce diffs to other versions2013-05-28T20:57:40ZEd Masteemaste@FreeBSD.org2013-05-28T20:57:40Zurn:sha1:3fb3b97c4d38990da5f45b37e48a5110b3e9bc58
NetBSD, OpenBSD, and Android's Bionic number the clauses 1 through 3,
so follow suit to make comparison easier.
Fix style.2008-11-03T10:14:47ZKonstantin Belousovkib@FreeBSD.org2008-11-03T10:14:47Zurn:sha1:6f41f432e166a3d94cd25a84c7f4ff2bfedd3206Per Regents of the University of Calfornia letter, remove advertising2007-01-09T00:28:16ZWarner Loshimp@FreeBSD.org2007-01-09T00:28:16Zurn:sha1:c879ae3536e6d92b8d96c8965c5b05fcb9541520
clause.
# If I've done so improperly on a file, please let me know.
Translate from GNU C to ISO C.2004-01-14T07:47:10ZDag-Erling Smørgravdes@FreeBSD.org2004-01-14T07:47:10Zurn:sha1:29554ea51ad481b7586f868327a4a0c925b54aa9Add and document ffsl(), fls() and flsl().2004-01-13T16:05:47ZDag-Erling Smørgravdes@FreeBSD.org2004-01-13T16:05:47Zurn:sha1:f434fe1237e333414c9aa8e906c60f2630f1f11b