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#include <string.h>
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#ifndef __SUPPORT_ARCH_SH
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int memcmp(void const *_s1, void const *_s2, size_t n)
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{
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char const *s1 = _s1;
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char const *s2 = _s2;
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for(size_t i = 0; i < n; i++) {
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int d = s1[i] - s2[i];
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if(d != 0) return d;
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}
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return 0;
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}
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#endif /*__SUPPORT_ARCH_SH*/
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