pub unsafe extern "C" fn graphene_vec4_init_from_vec4(
v: *mut graphene_vec4_t,
src: *const graphene_vec4_t,
) -> *mut graphene_vec4_t
pub unsafe extern "C" fn graphene_vec4_init_from_vec4(
v: *mut graphene_vec4_t,
src: *const graphene_vec4_t,
) -> *mut graphene_vec4_t