NAME
        SetFilterIX -- change the matching condition of a commodity filter.
                       (V36)

   SYNOPSIS
        SetFilterIX(filter,ix);
                    A0     A1

        VOID SetFilterIX(CxObj *,IX *);

   FUNCTION
        This function changes the matching condition of a commodity input
        filter to that described by the binary input expression pointed by
        'ix'.

        input expressions are defined in <libraries/commodities.h>.
        It is important to remember that the first field of the input
        expression structure must indicate which version of the
        input expression structure is being used.

   INPUTS
        filter - the filter object to affect (may be NULL)
        ix - the new matching conditions for the filter

   RESULTS
        The internal error of 'filter' will have the COERR_BADFILTER
        bit set or cleared depending on the failure or success of this
        function.

   SEE ALSO
        setfilter(), cxobjerror()