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21 lines
768 B
21 lines
768 B
#include "byte.h" |
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/* byte_diff returns negative, 0, or positive, depending on whether the |
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* string one[0], one[1], ..., one[len-1] is lexicographically smaller |
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* than, equal to, or greater than the string one[0], one[1], ..., |
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* one[len-1]. When the strings are different, byte_diff does not read |
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* bytes past the first difference. */ |
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int byte_diff(const void* a, unsigned long len, const void* b) { |
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register const char* s=a; |
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register const char* t=b; |
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register const char* u=t+len; |
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register int j; |
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j=0; |
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for (;;) { |
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if (t==u) break; if ((j=(*s-*t))) break; ++s; ++t; |
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if (t==u) break; if ((j=(*s-*t))) break; ++s; ++t; |
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if (t==u) break; if ((j=(*s-*t))) break; ++s; ++t; |
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if (t==u) break; if ((j=(*s-*t))) break; ++s; ++t; |
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} |
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return j; |
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}
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