octave-kai/gnulib-hg: lib/memcoll.c annotate

annotate lib/memcoll.c @ 16366:bb182ee4a09d

maint: replace FSF snail-mail addresses with URLs * config/argz.mk, lib/accept4.c, lib/alignof.h, lib/alloca.in.h: * lib/alphasort.c, lib/arcfour.c, lib/arcfour.h, lib/arctwo.c: * lib/arctwo.h, lib/argz.c, lib/arpa_inet.in.h, lib/asnprintf.c: * lib/asprintf.c, lib/assert.in.h, lib/base32.c, lib/base32.h: * lib/base64.c, lib/base64.h, lib/c-ctype.c, lib/c-ctype.h: * lib/c-strcase.h, lib/c-strcasecmp.c, lib/c-strncasecmp.c: * lib/check-version.c, lib/check-version.h, lib/config.charset: * lib/ctype.in.h, lib/des.c, lib/des.h, lib/dup3.c, lib/errno.in.h: * lib/float+.h, lib/fnmatch.c, lib/fnmatch.in.h, lib/fnmatch_loop.c: * lib/fseeko.c, lib/gai_strerror.c, lib/gc-gnulib.c: * lib/gc-libgcrypt.c, lib/gc-pbkdf2-sha1.c, lib/gc.h: * lib/getaddrinfo.c, lib/getdelim.c, lib/getfilecon.c, lib/getline.c: * lib/getlogin_r.c, lib/getpass.c, lib/getpass.h, lib/gettext.h: * lib/gettimeofday.c, lib/glob.in.h, lib/glthread/cond.c: * lib/glthread/cond.h, lib/glthread/lock.c, lib/glthread/lock.h: * lib/glthread/thread.c, lib/glthread/thread.h: * lib/glthread/threadlib.c, lib/glthread/yield.h, lib/hmac-md5.c: * lib/hmac-sha1.c, lib/hmac.h, lib/iconv.c, lib/iconv.in.h: * lib/iconv_close.c, lib/iconv_open.c, lib/inet_ntop.c, lib/isfinite.c: * lib/isinf.c, lib/iswblank.c, lib/langinfo.in.h, lib/link.c: * lib/localcharset.c, lib/localcharset.h, lib/lseek.c, lib/malloc.c: * lib/malloca.c, lib/malloca.h, lib/md2.c, lib/md2.h, lib/md4.c: * lib/md4.h, lib/md5.c, lib/md5.h, lib/memmem.c, lib/mempcpy.c: * lib/memset.c, lib/memxor.c, lib/memxor.h, lib/minmax.h, lib/mktime.c: * lib/msvc-inval.c, lib/msvc-inval.h, lib/msvc-nothrow.c: * lib/msvc-nothrow.h, lib/netdb.in.h, lib/netinet_in.in.h, lib/nproc.c: * lib/nproc.h, lib/obstack_printf.c, lib/pathmax.h, lib/pipe.c: * lib/pipe2.c, lib/poll.c, lib/poll.in.h, lib/printf-args.c: * lib/printf-args.h, lib/printf-parse.c, lib/printf-parse.h: * lib/pselect.c, lib/pthread.in.h, lib/pty-private.h, lib/pty.in.h: * lib/read-file.c, lib/read-file.h, lib/ref-add.sin, lib/ref-del.sin: * lib/regcomp.c, lib/regex.c, lib/regex.h, lib/regex_internal.c: * lib/regex_internal.h, lib/regexec.c, lib/rijndael-alg-fst.c: * lib/rijndael-alg-fst.h, lib/rijndael-api-fst.c: * lib/rijndael-api-fst.h, lib/rint.c, lib/rintf.c, lib/rintl.c: * lib/round.c, lib/roundf.c, lib/roundl.c, lib/scandir.c, lib/select.c: * lib/sha1.c, lib/sha1.h, lib/size_max.h, lib/snprintf.c: * lib/stdalign.in.h, lib/stdarg.in.h, lib/stdbool.in.h: * lib/stddef.in.h, lib/stdint.in.h, lib/stdio.in.h, lib/str-kmp.h: * lib/str-two-way.h, lib/strcasecmp.c, lib/strcasestr.c, lib/strdup.c: * lib/striconv.c, lib/striconv.h, lib/string.in.h, lib/strings.in.h: * lib/strncasecmp.c, lib/strndup.c, lib/strnlen.c, lib/strpbrk.c: * lib/strptime.c, lib/strsep.c, lib/strstr.c, lib/strverscmp.c: * lib/sys_file.in.h, lib/sys_ioctl.in.h, lib/sys_select.in.h: * lib/sys_socket.in.h, lib/sys_stat.in.h, lib/sys_time.in.h: * lib/sys_times.in.h, lib/sys_types.in.h, lib/sys_uio.in.h: * lib/sys_utsname.in.h, lib/sys_wait.in.h, lib/tcgetsid.c: * lib/termios.in.h, lib/time.in.h, lib/time_r.c, lib/timegm.c: * lib/times.c, lib/unictype/3level.h, lib/unictype/3levelbit.h: * lib/unistd.in.h, lib/vasnprintf.c, lib/vasnprintf.h, lib/vasprintf.c: * lib/vsnprintf.c, lib/waitpid.c, lib/wchar.in.h, lib/wctype.in.h: * lib/xsize.h, tests/test-closein.c, tests/test-des.c: * tests/test-fclose.c, tests/test-fgetc.c, tests/test-filevercmp.c: * tests/test-fputc.c, tests/test-fread.c, tests/test-fwrite.c: * tests/test-gc-arcfour.c, tests/test-gc-arctwo.c, tests/test-gc-des.c: * tests/test-gc-hmac-md5.c, tests/test-gc-hmac-sha1.c: * tests/test-gc-md2.c, tests/test-gc-md4.c, tests/test-gc-md5.c: * tests/test-gc-pbkdf2-sha1.c, tests/test-gc-rijndael.c: * tests/test-gc-sha1.c, tests/test-gc.c, tests/test-getdelim.c: * tests/test-getline.c, tests/test-getndelim2.c, tests/test-md2.c: * tests/test-md4.c, tests/test-parse-datetime.c, tests/test-perror.c: * tests/test-perror2.c, tests/test-pipe.c, tests/test-pipe2.c: * tests/test-poll.c, tests/test-quotearg-simple.c: * tests/test-quotearg.c, tests/test-quotearg.h: * tests/test-round-ieee.c, tests/test-round1.c: * tests/test-roundf-ieee.c, tests/test-roundf1.c: * tests/test-roundl-ieee.c, tests/test-roundl.c: * tests/test-safe-alloc.c, tests/test-sigpipe.c: * tests/test-spawn-pipe-child.c, tests/test-spawn-pipe-main.c: * tests/test-strerror.c, tests/test-strerror_r.c: * tests/test-strsignal.c, tests/test-strverscmp.c: * tests/test-xmemdup0.c: Replace FSF snail mail addresses with URLs, as per GNU coding standards. See glibc bug <http://sourceware.org/bugzilla/show_bug.cgi?id=13673>.

author	Paul Eggert <eggert@cs.ucla.edu>
date	Thu, 09 Feb 2012 21:39:05 -0800
parents	8250f2777afc
children	dcca7ac14066

rev	line source
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	1 /* Locale-specific memory comparison.
7302 8a1a9361108c * _fpending.c: Include <config.h> unconditionally, since we no Paul Eggert <eggert@cs.ucla.edu> parents: 7149 diff changeset	2
16201 8250f2777afc maint: update all copyright year number ranges Jim Meyering <meyering@redhat.com> parents: 14079 diff changeset	3 Copyright (C) 1999, 2002-2004, 2006, 2009-2012 Free Software Foundation,
12559 c2cbabec01dd update nearly all FSF copyright year lists to include 2010 Jim Meyering <meyering@redhat.com> parents: 12518 diff changeset	4 Inc.
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	5
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 7302 diff changeset	6 This program is free software: you can redistribute it and/or modify
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	7 it under the terms of the GNU General Public License as published by
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 7302 diff changeset	8 the Free Software Foundation; either version 3 of the License, or
bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 7302 diff changeset	9 (at your option) any later version.
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	10
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	11 This program is distributed in the hope that it will be useful,
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	12 but WITHOUT ANY WARRANTY; without even the implied warranty of
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	14 GNU General Public License for more details.
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	15
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	16 You should have received a copy of the GNU General Public License
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 7302 diff changeset	17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	18
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	19 /* Contributed by Paul Eggert <eggert@twinsun.com>. */
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	20
7302 8a1a9361108c * _fpending.c: Include <config.h> unconditionally, since we no Paul Eggert <eggert@cs.ucla.edu> parents: 7149 diff changeset	21 #include <config.h>
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	22
4347 df44e79ce676 .h files should stand alone, but we shouldn't include <sys/types.h> Paul Eggert <eggert@cs.ucla.edu> parents: 4120 diff changeset	23 #include "memcoll.h"
df44e79ce676 .h files should stand alone, but we shouldn't include <sys/types.h> Paul Eggert <eggert@cs.ucla.edu> parents: 4120 diff changeset	24
3708 bd719c800d4b Include errno.h, and declare errno if not defined. Jim Meyering <jim@meyering.net> parents: 2997 diff changeset	25 #include <errno.h>
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	26 #include <stdlib.h>
4664 42147e1c0cee Remove K&R cruft. Paul Eggert <eggert@cs.ucla.edu> parents: 4464 diff changeset	27 #include <string.h>
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	28
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	29 /* Compare S1 (with size S1SIZE) and S2 (with length S2SIZE) according
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	30 to the LC_COLLATE locale. S1 and S2 are both blocks of memory with
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	31 nonzero sizes, and the last byte in each block must be a null byte.
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	32 Set errno to an error number if there is an error, and to zero
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	33 otherwise. */
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	34 static inline int
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	35 strcoll_loop (char const s1, size_t s1size, char const s2, size_t s2size)
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	36 {
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	37 int diff;
13453 c5416617cfbf (x)memcoll: minor tweaks Paul Eggert <eggert@cs.ucla.edu> parents: 13452 diff changeset	38
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	39 while (! (errno = 0, (diff = strcoll (s1, s2)) \|\| errno))
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	40 {
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	41 /* strcoll found no difference, but perhaps it was fooled by NUL
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	42 characters in the data. Work around this problem by advancing
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	43 past the NUL chars. */
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	44 size_t size1 = strlen (s1) + 1;
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	45 size_t size2 = strlen (s2) + 1;
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	46 s1 += size1;
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	47 s2 += size2;
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	48 s1size -= size1;
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	49 s2size -= size2;
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	50
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	51 if (s1size == 0)
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	52 return - (s2size != 0);
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	53 if (s2size == 0)
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	54 return 1;
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	55 }
13453 c5416617cfbf (x)memcoll: minor tweaks Paul Eggert <eggert@cs.ucla.edu> parents: 13452 diff changeset	56
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	57 return diff;
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	58 }
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	59
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	60 /* Compare S1 (with length S1LEN) and S2 (with length S2LEN) according
1992 da00e3cba254 (memcoll): The two arguments cannot be Jim Meyering <jim@meyering.net> parents: 1869 diff changeset	61 to the LC_COLLATE locale. S1 and S2 do not overlap, and are not
4120 77d7a6d46166 (memcoll): Fall back on a simple algorithm using Paul Eggert <eggert@cs.ucla.edu> parents: 4104 diff changeset	62 adjacent. Perhaps temporarily modify the bytes after S1 and S2,
77d7a6d46166 (memcoll): Fall back on a simple algorithm using Paul Eggert <eggert@cs.ucla.edu> parents: 4104 diff changeset	63 but restore their original contents before returning. Set errno to an
3708 bd719c800d4b Include errno.h, and declare errno if not defined. Jim Meyering <jim@meyering.net> parents: 2997 diff changeset	64 error number if there is an error, and to zero otherwise. */
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	65 int
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	66 memcoll (char s1, size_t s1len, char s2, size_t s2len)
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	67 {
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	68 int diff;
4120 77d7a6d46166 (memcoll): Fall back on a simple algorithm using Paul Eggert <eggert@cs.ucla.edu> parents: 4104 diff changeset	69
7147 1388e7363d86 * memcoll.c (memcoll): Optimize for the common case where the Paul Eggert <eggert@cs.ucla.edu> parents: 6259 diff changeset	70 /* strcoll is slow on many platforms, so check for the common case
1388e7363d86 * memcoll.c (memcoll): Optimize for the common case where the Paul Eggert <eggert@cs.ucla.edu> parents: 6259 diff changeset	71 where the arguments are bytewise equal. Otherwise, walk through
1388e7363d86 * memcoll.c (memcoll): Optimize for the common case where the Paul Eggert <eggert@cs.ucla.edu> parents: 6259 diff changeset	72 the buffers using strcoll on each substring. */
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	73
7147 1388e7363d86 * memcoll.c (memcoll): Optimize for the common case where the Paul Eggert <eggert@cs.ucla.edu> parents: 6259 diff changeset	74 if (s1len == s2len && memcmp (s1, s2, s1len) == 0)
7149 bf3b976f47a7 (memcoll): Set errno = 0 in the shortcut case, too. Paul Eggert <eggert@cs.ucla.edu> parents: 7147 diff changeset	75 {
bf3b976f47a7 (memcoll): Set errno = 0 in the shortcut case, too. Paul Eggert <eggert@cs.ucla.edu> parents: 7147 diff changeset	76 errno = 0;
bf3b976f47a7 (memcoll): Set errno = 0 in the shortcut case, too. Paul Eggert <eggert@cs.ucla.edu> parents: 7147 diff changeset	77 diff = 0;
bf3b976f47a7 (memcoll): Set errno = 0 in the shortcut case, too. Paul Eggert <eggert@cs.ucla.edu> parents: 7147 diff changeset	78 }
7147 1388e7363d86 * memcoll.c (memcoll): Optimize for the common case where the Paul Eggert <eggert@cs.ucla.edu> parents: 6259 diff changeset	79 else
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	80 {
7147 1388e7363d86 * memcoll.c (memcoll): Optimize for the common case where the Paul Eggert <eggert@cs.ucla.edu> parents: 6259 diff changeset	81 char n1 = s1[s1len];
1388e7363d86 * memcoll.c (memcoll): Optimize for the common case where the Paul Eggert <eggert@cs.ucla.edu> parents: 6259 diff changeset	82 char n2 = s2[s2len];
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	83
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	84 s1[s1len] = '\0';
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	85 s2[s2len] = '\0';
7147 1388e7363d86 * memcoll.c (memcoll): Optimize for the common case where the Paul Eggert <eggert@cs.ucla.edu> parents: 6259 diff changeset	86
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	87 diff = strcoll_loop (s1, s1len + 1, s2, s2len + 1);
7147 1388e7363d86 * memcoll.c (memcoll): Optimize for the common case where the Paul Eggert <eggert@cs.ucla.edu> parents: 6259 diff changeset	88
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	89 s1[s1len] = n1;
0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	90 s2[s2len] = n2;
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	91 }
0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	92
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	93 return diff;
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	94 }
4120 77d7a6d46166 (memcoll): Fall back on a simple algorithm using Paul Eggert <eggert@cs.ucla.edu> parents: 4104 diff changeset	95
13719 ba8adb841ec0 memcoll, xmemcoll: Clarify size vs. length. Bruno Haible <bruno@clisp.org> parents: 13459 diff changeset	96 /* Compare S1 (a memory block of size S1SIZE, with a NUL as last byte)
ba8adb841ec0 memcoll, xmemcoll: Clarify size vs. length. Bruno Haible <bruno@clisp.org> parents: 13459 diff changeset	97 and S2 (a memory block of size S2SIZE, with a NUL as last byte)
ba8adb841ec0 memcoll, xmemcoll: Clarify size vs. length. Bruno Haible <bruno@clisp.org> parents: 13459 diff changeset	98 according to the LC_COLLATE locale. S1SIZE and S2SIZE must be > 0.
13453 c5416617cfbf (x)memcoll: minor tweaks Paul Eggert <eggert@cs.ucla.edu> parents: 13452 diff changeset	99 Set errno to an error number if there is an error, and to zero
c5416617cfbf (x)memcoll: minor tweaks Paul Eggert <eggert@cs.ucla.edu> parents: 13452 diff changeset	100 otherwise. */
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	101 int
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	102 memcoll0 (char const s1, size_t s1size, char const s2, size_t s2size)
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	103 {
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	104 if (s1size == s2size && memcmp (s1, s2, s1size) == 0)
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	105 {
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	106 errno = 0;
13453 c5416617cfbf (x)memcoll: minor tweaks Paul Eggert <eggert@cs.ucla.edu> parents: 13452 diff changeset	107 return 0;
13452 edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	108 }
edb3fc126c07 (x)memcoll: speedup when input is known to be NUL delimited Chen Guo <chenguo4@yahoo.com> parents: 12559 diff changeset	109 else
13459 0a02e7a4ac23 memcoll: clarify sizes versus lengths, document better, and tweak perf Paul R. Eggert <eggert@cs.ucla.edu> parents: 13453 diff changeset	110 return strcoll_loop (s1, s1size, s2, s2size);
1869 0f0905dd78b2 . Jim Meyering <jim@meyering.net> parents: diff changeset	111 }

Mercurial > hg > octave-kai > gnulib-hg

annotate lib/memcoll.c @ 16366:bb182ee4a09d