Mercurial > gnulib
view lib/integer_length.h @ 17454:a2d511609297
sys_time: port to OpenBSD
* lib/sys_time.in.h: Simply delegate to the system's header
in the BSDish cases as well. Problem reported by Mike Miller in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-08/msg00016.html>.
* tests/test-sys_select.c, tests/test-sys_time.c (verify_tv_sec_type):
Allow platforms like 64-bit OpenBSD where timeval's tv_sec is
wider than time_t.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 10 Aug 2013 22:02:58 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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/* integer_length - find most significant bit in an unsigned integer. Copyright (C) 2011-2013 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* Written by Bruno Haible <bruno@clisp.org>, 2011. */ #ifndef _INTEGER_LENGTH_H #define _INTEGER_LENGTH_H #ifdef __cplusplus extern "C" { #endif /* These functions return the minimum number of bits required to represent the given unsigned integer. For non-zero values, this is the position of the most significant bit that is set, plus one. For zero, it is 0. */ /* Returns the integer length of x. The result is >= 0, <= sizeof (unsigned int) * CHAR_BIT. */ extern int integer_length (unsigned int x); /* Returns the integer length of x. The result is >= 0, <= sizeof (unsigned long) * CHAR_BIT. */ extern int integer_length_l (unsigned long x); #if HAVE_UNSIGNED_LONG_LONG_INT /* Returns the integer length of x. The result is >= 0, <= sizeof (unsigned long long) * CHAR_BIT. */ extern int integer_length_ll (unsigned long long x); #endif #ifdef __cplusplus } #endif #endif /* _INTEGER_LENGTH_H */