TryCF Gist

trycf-gist.cfm

<cfscript>
function f(size, factor=1) {
    var unit = ['B', 'KB', 'MB', 'GB', 'TB', 'PB'];
    if (factor < unit.len() && size >= 1024) {
        size = size/1024;
        return f(size, ++factor);
    }
    return int(size) & " " & unit[factor];
}



function assert(actual,expected) {
	var passed = actual == expected;
	writeOutput(passed & " | expected: #expected# got #actual#<br>");
}


assert(f(1), '1 B');
assert(f(1024), '1 KB');
assert(f(1048576), '1 MB');
assert(f(1234567), '1 MB');
assert(f(9999999999), '9 GB' );
assert(f(1099511627776), '1 TB' );
assert(f(1125899906842624), '1 PB' );
assert(f(1152921504606846976), '1024 PB');
</cfscript>