bool :mkbool ( mixed &ARG , … )
bool :mklog ( mixed &ARG , … )

Takes any number of arguments and converts them to booleans. If the argument is a variable reference, the variable type will be changed! Returns a copy of the leftmost argument. Typecast rules are the same as when performing implicit typecasts.

# Typecast example.
:set &NUM i0
:read &NUM
:writeln (:typeof $NUM) s' ' $NUM
:mkbool &NUM
:writeln (:typeof $NUM) s' ' :fork $NUM s'TRUE' s'FALSE'