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      1 /* Portable version of strrchr().
      2    This function is in the public domain. */
      3 
      4 /*
      5 
      6 @deftypefn Supplemental char* strrchr (const char *@var{s}, int @var{c})
      7 
      8 Returns a pointer to the last occurrence of the character @var{c} in
      9 the string @var{s}, or @code{NULL} if not found.  If @var{c} is itself the
     10 null character, the results are undefined.
     11 
     12 @end deftypefn
     13 
     14 */
     15 
     16 #include <ansidecl.h>
     17 
     18 char *
     19 strrchr (register const char *s, int c)
     20 {
     21   char *rtnval = 0;
     22 
     23   do {
     24     if (*s == c)
     25       rtnval = (char*) s;
     26   } while (*s++);
     27   return (rtnval);
     28 }
     29