1/* Compare UTF-32 strings. 2 Copyright (C) 1999, 2002, 2006, 2009-2010 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2002. 4 5 This program is free software: you can redistribute it and/or modify it 6 under the terms of the GNU Lesser General Public License as published 7 by the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18#include <config.h> 19 20/* Specification. */ 21#include "unistr.h" 22 23int 24u32_strncmp (const uint32_t *s1, const uint32_t *s2, size_t n) 25{ 26 for (; n > 0;) 27 { 28 uint32_t uc1 = *s1++; 29 uint32_t uc2 = *s2++; 30 if (uc1 != 0 && uc1 == uc2) 31 { 32 n--; 33 continue; 34 } 35 /* Note that uc1 and uc2 each have at most 31 bits. */ 36 return (int)uc1 - (int)uc2; 37 /* > 0 if uc1 > uc2, < 0 if uc1 < uc2, = 0 if uc1 and uc2 are both 0. */ 38 } 39 return 0; 40} 41