12345678910111213141516 |
- // `Math.scale` method implementation
- // https://rwaldron.github.io/proposal-math-extensions/
- module.exports = Math.scale || function scale(x, inLow, inHigh, outLow, outHigh) {
- if (
- arguments.length === 0
- /* eslint-disable no-self-compare -- NaN check */
- || x != x
- || inLow != inLow
- || inHigh != inHigh
- || outLow != outLow
- || outHigh != outHigh
- /* eslint-enable no-self-compare -- NaN check */
- ) return NaN;
- if (x === Infinity || x === -Infinity) return x;
- return (x - inLow) * (outHigh - outLow) / (inHigh - inLow) + outLow;
- };
|