fib-rs 1.2.6

A highly optimized Fibonacci number calculator for Rust that efficiently computes arbitrarily large Fibonacci numbers.
Documentation 
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use fib_rs::Fib;

#[test]
fn test_fibonacci_identities() {
    // Test F(n+1) = F(n) + F(n-1) for various values
    for n in 2..1000 {
        assert_eq!(Fib::single(n), Fib::single(n - 1) + Fib::single(n - 2));
    }
}

#[test]
fn test_range_consistency() {
    // Test individual vs range calculations match
    let range = 0..=1000;
    let range_results = Fib::range(*range.start(), *range.end());

    for (i, n) in range.enumerate() {
        assert_eq!(range_results[i], Fib::single(n));
    }
}

#[test]
fn test_invalid_range_returns_empty() {
    let range_results = Fib::range(10, 5);
    assert!(range_results.is_empty());
}