f_slop_y         1733 ext/gd/libgd/gd_interpolation.c 	const gdFixed f_slop_y = f_sin;
f_slop_y         1736 ext/gd/libgd/gd_interpolation.c 							f_slop_x > f_slop_y ? gd_divfx(f_slop_y, f_slop_x) : gd_divfx(f_slop_x, f_slop_y)