#if HAVE_FLOAT
	    if (t == VT_FLOAT)
	        vtop->c.f = -1.0 * 0.0;
	    else if (t == VT_DOUBLE)
	        vtop->c.d = -1.0 * 0.0;
	    else
	        vtop->c.ld = -1.0 * 0.0;
#endif