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实现方式:
int ho_memcmp(const void *s1, const void *s2, size_t n) { unsigned char *p1, *p2; p1 = (unsigned char *)s1; p2 = (unsigned char *)s2; char c; while (!(c = *p1 - *p2) && n--) { p1++; p2++; } return c; }
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原文地址:http://my.oschina.net/guonaihong/blog/387702