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| author | Richard Lowe <richlowe@richlowe.net> | 2022-02-22 18:00:48 -0600 |
|---|---|---|
| committer | Richard Lowe <richlowe@richlowe.net> | 2022-02-22 18:00:48 -0600 |
| commit | 3971085411b91c5d82e278443ab68fca1946cb21 (patch) | |
| tree | 8e6d01d8aea1c3d8179a47b929ff5bfa8b42f752 /usr/src/boot/libsa/string/fls.c | |
| parent | 1df45418ec3688847e142a9a2213965459ff39c7 (diff) | |
| parent | ca783257c986cddcc674ae22916a6766b98a2d36 (diff) | |
| download | illumos-joyent-3971085411b91c5d82e278443ab68fca1946cb21.tar.gz | |
Merge branch 'master' of https://github.com/illumos/illumos-gate into man/big-reorg
# Conflicts:
# usr/src/cmd/fmthard/fmthard.c
# usr/src/cmd/zoneadmd/zcons.c
# usr/src/man/man2/chmod.2
# usr/src/man/man2/close.2
# usr/src/man/man2/open.2
# usr/src/man/man3c/grantpt.3c
# usr/src/man/man3c/posix_openpt.3c
# usr/src/man/man3c/ptsname.3c
# usr/src/man/man3c/unlockpt.3c
# usr/src/man/man3utempter/utempter_add_record.3utempter
# usr/src/man/man4/Makefile
# usr/src/man/man4d/ptm.4d
# usr/src/man/man4d/pts.4d
# usr/src/man/man4d/pty.4d
# usr/src/man/man4d/zcons.4d
# usr/src/man/man4m/pckt.4m
# usr/src/man/man4m/ptem.4m
# usr/src/man/man4p/vxlan.7p
# usr/src/man/man5/Makefile
# usr/src/man/man5/bhyve_config.5
# usr/src/man/man7d/Makefile
# usr/src/man/man7p/Makefile
# usr/src/man/man8/bhyve.8
# usr/src/man/man8/dladm.8
# usr/src/man/man8/flowadm.8
# usr/src/man/man8/fmthard.8
# usr/src/man/man8/in.rlogind.8
# usr/src/man/man8/in.telnetd.8
# usr/src/man/man8/nvmeadm.8
# usr/src/man/man8/pppd.8
# usr/src/pkg/manifests/SUNWcs.man4d.inc
# usr/src/uts/common/io/zcons.c
Diffstat (limited to 'usr/src/boot/libsa/string/fls.c')
| -rw-r--r-- | usr/src/boot/libsa/string/fls.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/usr/src/boot/libsa/string/fls.c b/usr/src/boot/libsa/string/fls.c new file mode 100644 index 0000000000..7145b909f0 --- /dev/null +++ b/usr/src/boot/libsa/string/fls.c @@ -0,0 +1,48 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <strings.h> + +/* + * Find Last Set bit + */ +int +fls(int mask) +{ + int bit; + + if (mask == 0) + return (0); + for (bit = 1; mask != 1; bit++) + mask = (unsigned int)mask >> 1; + return (bit); +} |