SYNOPSIS
int mappingp(mixed arg)
DESCRIPTION
Returns 1 if the argument is a mapping, or 0 if it is not.
SEE ALSO
mkmapping(E), m_indices(E), m_values(E), m_add(E),
m_delete(E), sizeof(E), widthof(E). clonep(E), closurep(E),
floatp(E), objectp(E), intp(E), referencep(E), pointerp(E),
stringp(E), symbolp(E), structp(E)