/* get ztic, ticval or -1 */
_gztic(w)
{
        local tic;

        if (argc < 1)
        {
                if (getzticset) tic = getztic;
                else tic = -1;
        }
        else
        {
                if (getzticset(w)) tic = getztic(w);
                else tic = -1;
        }
        return(tic);
}