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'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);
};