c/string/byte/strrchr

@1@ Finds the last occurrence of (after conversion to  as if by ) in the null-terminated byte string pointed to by  (each character interpreted as ). The terminating null character is considered to be a part of the string and can be found if searching for.

@2@

The behavior is undefined if is not a pointer to a null-terminated byte string.

Return value
Pointer to the found character in, or null pointer if no such character is found.