str_rchr.c

   1 #include "str.h"
   2
   3 unsigned int str_rchr(register const char *s,int c)
   4 {
   5   register char ch;
   6   register const char *t;
   7   register const char *u;
   8
   9   ch = c;
  10   t = s;
  11   u = 0;
  12   for (;;) {
  13     if (!*t) break; if (*t == ch) u = t; ++t;
  14     if (!*t) break; if (*t == ch) u = t; ++t;
  15     if (!*t) break; if (*t == ch) u = t; ++t;
  16     if (!*t) break; if (*t == ch) u = t; ++t;
  17   }
  18   if (!u) u = t;
  19   return u - s;
  20 }