- 'use strict';
- var floor = Math.floor;
- module.exports = function (x) {
- if (isNaN(x)) return NaN;
- x = Number(x);
- if (x === 0) return x;
- if (x === Infinity) return Infinity;
- if (x === -Infinity) return -Infinity;
- if (x > 0) return floor(x);
- return -floor(-x);
- };
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