1 /* Compare UTF-32 strings. 2 Copyright (C) 1999, 2002, 2006, 2009-2021 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2002. 4 5 This file is free software. 6 It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+". 7 You can redistribute it and/or modify it under either 8 - the terms of the GNU Lesser General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version, or 11 - the terms of the GNU General Public License as published by the 12 Free Software Foundation; either version 2, or (at your option) 13 any later version, or 14 - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+". 15 16 This file is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 Lesser General Public License and the GNU General Public License 20 for more details. 21 22 You should have received a copy of the GNU Lesser General Public 23 License and of the GNU General Public License along with this 24 program. If not, see <https://www.gnu.org/licenses/>. */ 25 26 #include <config.h> 27 28 /* Specification. */ 29 #include "unistr.h" 30 31 int 32 u32_strcmp (const uint32_t *s1, const uint32_t *s2) /* */ 33 { 34 for (;;) 35 { 36 uint32_t uc1 = *s1++; 37 uint32_t uc2 = *s2++; 38 if (uc1 != 0 && uc1 == uc2) 39 continue; 40 /* Note that uc1 and uc2 each have at most 31 bits. */ 41 return (int)uc1 - (int)uc2; 42 /* > 0 if uc1 > uc2, < 0 if uc1 < uc2. */ 43 } 44 }