locutus/esm/php/bc/bccomp.js

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

import { _bc as bc } from "../_helpers/_bc.js";
export function bccomp(leftOperand, rightOperand, scale) {
    //  discuss at: https://locutus.io/php/bccomp/
    // original by: lmeyrick (https://sourceforge.net/projects/bcmath-js/)
    //   example 1: bccomp('-1', '5', 4)
    //   returns 1: -1
    //   example 2: bccomp('1928372132132819737213', '8728932001983192837219398127471')
    //   returns 2: -1
    //   example 3: bccomp('1.00000000000000000001', '1', 2)
    //   returns 3: 0
    //   example 4: bccomp('97321', '2321')
    //   returns 4: 1
    const libbcmath = bc();
    if (typeof scale === 'undefined') {
        scale = libbcmath.scale;
    }
    scale = scale < 0 ? 0 : scale;
    let first = libbcmath.bc_init_num();
    let second = libbcmath.bc_init_num();
    // note bc_ not php_str2num
    first = libbcmath.bc_str2num(leftOperand.toString(), scale);
    // note bc_ not php_str2num
    second = libbcmath.bc_str2num(rightOperand.toString(), scale);
    return libbcmath.bc_compare(first, second);
}