NAME
        MatchIX -- see if an input event matches an initialized input
                   expression. (V38)

   SYNOPSIS
        match = MatchIX(event,ix);
        D0              A0    A1

        bool matchix(struct inputevent *,ix *);

   FUNCTION
        This function determines whether an input event matches an
        initialized input expression. Applications generally do not
        need to call this function as filter objects will normally provide
        all the event filtering needed. Nevertheless, MatchIX()
        can come in handy as it is the same function used to match an
        event to the various filter objects when an event makes its way
        through the input network.

   INPUTS
        event - the input event to match against the input expression
        ix - the input expression for the comparison

   RESULTS
        match - TRUE if the input event matches the input expression, or
                FALSE if not

   SEE ALSO
        <libraries/commodities.h>, parseix()