xp2               535 ext/gd/libgd/gd_interpolation.c 		const double xp2 = x + 2.0f;
xp2               537 ext/gd/libgd/gd_interpolation.c 		if ((xp2) <= 0.0f) a = 0.0f; else a = xp2*xp2*xp2;