nyf               753 ext/gd/libgd/gd_interpolation.c 	const double nyf = (double) 1.0 - yf;
nyf               756 ext/gd/libgd/gd_interpolation.c 	const double m3 = xf * nyf;
nyf               757 ext/gd/libgd/gd_interpolation.c 	const double m4 = nxf * nyf;