xm1               533 ext/gd/libgd/gd_interpolation.c 		const double xm1 = x - 1.0f;
xm1               540 ext/gd/libgd/gd_interpolation.c 		if ((xm1) <= 0.0f) d = 0.0f; else d = xm1*xm1*xm1;