Commit 833d3e8f authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont

compat: remove no longer used ffsll()

We don't need two ways to count trailing zeroes.
parent 1d95200c
/*****************************************************************************
* ffsll.c: GNU ffsll() replacement
*****************************************************************************
* Copyright © 2015 Rémi Denis-Courmont
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <limits.h>
int ffsll(long long x)
{
for (unsigned i = 0; i < sizeof (x) * CHAR_BIT; i++)
if ((x >> i) & 1)
return i + 1;
return 0;
}
......@@ -585,7 +585,7 @@ need_libc=false
dnl Check for usual libc functions
AC_CHECK_FUNCS([accept4 daemon fcntl flock fstatvfs fork getenv getpwuid_r isatty memalign mkostemp mmap open_memstream newlocale openat pipe2 pread posix_fadvise posix_madvise posix_memalign setlocale stricmp strnicmp strptime uselocale])
AC_REPLACE_FUNCS([aligned_alloc atof atoll dirfd fdopendir ffsll flockfile fsync getdelim getpid lldiv memrchr nrand48 poll recvmsg rewind sendmsg setenv strcasecmp strcasestr strdup strlcpy strndup strnlen strnstr strsep strtof strtok_r strtoll swab tdestroy tfind timegm timespec_get strverscmp pathconf])
AC_REPLACE_FUNCS([aligned_alloc atof atoll dirfd fdopendir flockfile fsync getdelim getpid lldiv memrchr nrand48 poll recvmsg rewind sendmsg setenv strcasecmp strcasestr strdup strlcpy strndup strnlen strnstr strsep strtof strtok_r strtoll swab tdestroy tfind timegm timespec_get strverscmp pathconf])
AC_REPLACE_FUNCS([gettimeofday])
AC_CHECK_FUNC(fdatasync,,
[AC_DEFINE(fdatasync, fsync, [Alias fdatasync() to fsync() if missing.])
......
......@@ -164,10 +164,6 @@ int vasprintf (char **, const char *, va_list);
#endif
/* string.h */
#ifndef HAVE_FFSLL
int ffsll(long long);
#endif
#ifndef HAVE_MEMRCHR
void *memrchr(const void *, int, size_t);
#endif
......
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