pub unsafe extern "C" fn graphene_point3d_init(
p: *mut graphene_point3d_t,
x: c_float,
y: c_float,
z: c_float,
) -> *mut graphene_point3d_t
pub unsafe extern "C" fn graphene_point3d_init(
p: *mut graphene_point3d_t,
x: c_float,
y: c_float,
z: c_float,
) -> *mut graphene_point3d_t