str_diff.c
author tomas@localhost
Thu, 01 Nov 2007 14:46:11 +0100
changeset 0 c045670f36e9
permissions -rw-r--r--
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#include "str.h"
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int str_diff(s,t)
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register char *s;
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register char *t;
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{
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  register char x;
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  for (;;) {
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    x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
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    x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
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    x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
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    x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
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  }
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  return ((int)(unsigned int)(unsigned char) x)
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       - ((int)(unsigned int)(unsigned char) *t);
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}