Function graphene_sys::graphene_matrix_init_look_at

pub unsafe extern "C" fn graphene_matrix_init_look_at(
    m: *mut graphene_matrix_t, 
    eye: *const graphene_vec3_t, 
    center: *const graphene_vec3_t, 
    up: *const graphene_vec3_t
) -> *mut graphene_matrix_t