From e7624ee96a0ab7bd6cb88811205b8c4a997fdb93 Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Tue, 9 Jan 2007 14:10:07 +0000 Subject: New modules 'unistr/u8-strncmp', 'unistr/u16-strncmp', 'unistr/u32-strncmp'. --- lib/unistr/u32-strncmp.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 lib/unistr/u32-strncmp.c (limited to 'lib/unistr/u32-strncmp.c') diff --git a/lib/unistr/u32-strncmp.c b/lib/unistr/u32-strncmp.c new file mode 100644 index 0000000000..0afb190f43 --- /dev/null +++ b/lib/unistr/u32-strncmp.c @@ -0,0 +1,42 @@ +/* Compare UTF-32 strings. + Copyright (C) 1999, 2002, 2006 Free Software Foundation, Inc. + Written by Bruno Haible , 2002. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library General Public License as published + by the Free Software Foundation; either version 2, 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library 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. */ + +#include + +/* Specification. */ +#include "unistr.h" + +int +u32_strncmp (const uint32_t *s1, const uint32_t *s2, size_t n) +{ + for (; n > 0;) + { + uint32_t uc1 = *s1++; + uint32_t uc2 = *s2++; + if (uc1 != 0 && uc1 == uc2) + { + n--; + continue; + } + /* Note that uc1 and uc2 each have at most 31 bits. */ + return (int)uc1 - (int)uc2; + /* > 0 if uc1 > uc2, < 0 if uc1 < uc2, = 0 if uc1 and uc2 are both 0. */ + } + return 0; +} -- cgit v1.2.1