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ghalimi/DELTA.js

Created January 13, 2013 15:48
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DELTA Function
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DELTA.js
// Copyright (c) 2012 Sutoiku, Inc. (MIT License)
function DELTA(number1, number2) {
// Set number2 to zero if undefined
number2 = (typeof number2 === 'undefined') ? 0 : number2;
// Return error if either number is not a number
if (isNaN(number1) || isNaN(number2)) return '#VALUE!';
// Return delta
return (number1 === number2) ? 1 : 0;
}
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