```rust
use radix_str::radix_str;
static TEST0: &str = radix_str!(1234567890, 36);
static TEST1: &str = radix_str!(-1234567890, 36);
fn test() {
assert_eq!(TEST0, "kf12oi");
assert_eq!(TEST1, "-kf12oi");
println!("TEST0 = {}", TEST0);
println!("TEST1 = {}", TEST1);
}
```