qsort.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:2k
源码类别:
Windows CE
开发平台:
C/C++
- /*****************************************************************************
- *
- * 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 2 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * $Id: qsort.c 271 2005-08-09 08:31:35Z picard $
- *
- * The Core Pocket Media Player
- * Copyright (c) 2004-2005 Gabor Kovacs
- *
- ****************************************************************************/
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- // cheap fake bubble sort :)))
- #if defined(__GNUC__)
- #define alloca(size) __builtin_alloca(size)
- #else
- #include <malloc.h>
- #endif
- void qsort(void *const base, size_t num, size_t size,int (*cmp)(const void*, const void*))
- {
- if (num>1)
- {
- void* tmp = alloca(size);
- int changed;
- do
- {
- char* p = (char*)base;
- char* pe = p + num*size;
- changed = 0;
- for (p+=size;p!=pe;p+=size)
- if (cmp(p-size,p)>0)
- {
- memcpy(tmp,p,size);
- memcpy(p,p-size,size);
- memcpy(p-size,tmp,size);
- changed = 1;
- }
- }
- while (changed);
- }
- }