GD_GENERALIZED_CUBIC 1187 ext/gd/gd.c REGISTER_LONG_CONSTANT("IMG_GENERALIZED_CUBIC", GD_GENERALIZED_CUBIC, CONST_CS | CONST_PERSISTENT); GD_GENERALIZED_CUBIC 2512 ext/gd/libgd/gd_interpolation.c case GD_GENERALIZED_CUBIC: