locutus/r/base/sign.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.sign = sign;
function sign(x) {
    //      discuss at: https://locutus.io/r/sign/
    // parity verified: R 4.4
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //       example 1: sign(-5)
    //       returns 1: -1
    //       example 2: sign(0)
    //       returns 2: 0
    //       example 3: sign(3.14)
    //       returns 3: 1
    if (Object.is(x, -0)) {
        return 0;
    }
    return Math.sign(x);
}