byte_rchr.c
author "Tomas Zeman <tomas.zeman@sun.com>"
Fri, 19 Oct 2007 14:06:22 +0200
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#include "byte.h"
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unsigned int byte_rchr(s,n,c)
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char *s;
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register unsigned int n;
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int c;
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{
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  register char ch;
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  register char *t;
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  register char *u;
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  ch = c;
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  t = s;
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  u = 0;
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  for (;;) {
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    if (!n) break; if (*t == ch) u = t; ++t; --n;
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    if (!n) break; if (*t == ch) u = t; ++t; --n;
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    if (!n) break; if (*t == ch) u = t; ++t; --n;
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    if (!n) break; if (*t == ch) u = t; ++t; --n;
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  }
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  if (!u) u = t;
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  return u - s;
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}