suitcase

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byte_chr.c (393B)

      1 #include "byte.h"
      2 
      3 unsigned int byte_chr(char *s, unsigned int n, int c)
      4 {
      5   char ch;
      6   char *t;
      7 
      8   ch = c;
      9   t = s;
     10   for (;;) {
     11     if (!n) break; if (*t == ch) break; ++t; --n;
     12     if (!n) break; if (*t == ch) break; ++t; --n;
     13     if (!n) break; if (*t == ch) break; ++t; --n;
     14     if (!n) break; if (*t == ch) break; ++t; --n;
     15   }
     16   /* loop unrolling? smart bernstein. */
     17   return t - s;
     18 }