archive-l-e is a compiled Lisp function in `arc-mode.el'.

(archive-l-e STR &optional LEN FLOAT)

Convert little endian string/vector STR to integer.
Alternatively, STR may be a buffer position in the current buffer
in which case a second argument, length LEN, should be supplied.
FLOAT, if non-nil, means generate and return a float instead of an integer
(use this for numbers that can overflow the Emacs integer).