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jessechounard/floatCompare.ts

Last active February 26, 2022 20:49
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Typescript floating point comparison
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floatCompare.ts
// Based on Christer Ericson's talk on floating point tolerance
// http://realtimecollisiondetection.net/blog/?p=89
const approximatelyEqual = (a: number, b: number, tolerance: number = 0.000001) => {
return (Math.abs(a - b) <= tolerance * Math.max(1.0, Math.max(Math.abs(a), Math.abs(b))));
}
console.log(approximatelyEqual(3.56999999, 3.57)); // true
console.log(approximatelyEqual(4.001, 4.002)); // false
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