BEGIN {
    print "=== Minimal Standard Library Test ==="
}

RAWK {
    $test_func = (x) -> {
        return is_number(x);
    };
}

{
    # Test basic functionality
    result = test_func(42);
    print "Result:", result;
    
    # Test direct calls
    print "is_number(42):", is_number(42);
    print "is_positive(10):", is_positive(10);
    
    print "Test completed";
    exit 0;
}