@rayyamhk/matrix/lib/core/structure/isSquare.js

A professional, comprehensive and high-performance library for you to manipulate matrices.

"use strict";

/**
 * Determines whether a Matrix is square or not.<br><br>
 * 
 * Square Matrix is a Matrix with same number of rows and columns.<br><br>
 * 
 * The result is cached.
 * @memberof Matrix
 * @instance
 * @returns {boolean} Returns true if the Matrix is square
 */
function isSquare() {
  if (this._isSquare !== undefined) {
    return this._isSquare;
  }

  var A = this._matrix;

  if (A.length === 0) {
    // 0x0 matrix
    this._isSquare = true;
    return true;
  }

  this._isSquare = A.length === A[0].length;
  return this._isSquare;
}

;
module.exports = isSquare;