Searches the string haystack for the last occurrence of the string needle, limiting the length of the search to haystack_len.
a string to search in
the maximum length of haystack in bytes. A length of -1 can be used to mean "search the entire string", like funcGLib.strrstr
the string to search for
a pointer to the found occurrence, or NULL if not found
Searches the string haystack for the last occurrence of the string needle, limiting the length of the search to haystack_len.