nerdamer-ts/dist/Functions/Core/imaginary/arg.js

javascript light-weight symbolic math expression evaluator

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.arg = void 0;
const Symbol_1 = require("../../../Types/Symbol");
const Parser_1 = require("../../../Parser/Parser");
/**
 * Returns the arugment of a complex number
 * @param {Symbol} symbol
 * @returns {Symbol}
 */
function arg(symbol) {
    var re = symbol.realpart();
    var im = symbol.imagpart();
    if (re.isConstant() && im.isConstant()) {
        if (im.equals(0) && re.equals(-1)) {
            return (0, Parser_1.parse)('pi');
        }
        else if (im.equals(1) && re.equals(0)) {
            return (0, Parser_1.parse)('pi/2');
        }
        else if (im.equals(1) && re.equals(1)) {
            return (0, Parser_1.parse)('pi/4');
        }
        return new Symbol_1.Symbol(Math.atan2(im, re));
    }
    return (0, Symbol_1.symfunction)('atan2', [im, re]);
}
exports.arg = arg;
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