Function backend

cake-core/tests/unit_tests/test_backend_ops.rs:6–8

()

use cake_core::backends::{create_backend, ComputeBackend};

fn backend() -> std::sync::Arc<dyn ComputeBackend> {
    create_backend(&Device::Cpu)
}

fn assert_close(a: &Tensor, b: &Tensor, tol: f32) {
    let diff = (a - b).unwrap().abs().unwrap();