lib/strrchr.c

   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 (s, c)
  20   register const char *s;
  21   int c;
  22 {
  23   char *rtnval = 0;
  24
  25   do {
  26     if (*s == c)
  27       rtnval = (char*) s;
  28   } while (*s++);
  29   return (rtnval);
  30 }