pub unsafe extern "C" fn graphene_euler_init(
e: *mut graphene_euler_t,
x: c_float,
y: c_float,
z: c_float,
) -> *mut graphene_euler_t
pub unsafe extern "C" fn graphene_euler_init(
e: *mut graphene_euler_t,
x: c_float,
y: c_float,
z: c_float,
) -> *mut graphene_euler_t