memcmp.c

来自「minimal python variant for small footpri」· C语言 代码 · 共 24 行

/*
 *  linux/lib/string.c
 *
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */

#include <sys/types.h>
#include <string.h>
#include <ctype.h>

#ifndef __HAVE_ARCH_MEMCMP
int memcmp(const void * cs,const void * ct,size_t count)
{
  const unsigned char *su1, *su2;
  signed char res = 0;
  
  for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
    if ((res = *su1 - *su2) != 0)
      break;
  return res;
}
#endif