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C:/Program Files/nodejs/node_modules/npm/node_modules/qrcode-terminal/vendor/QRCode/

File / Folder	Size	Action
.	-
QR8bitByte.js	0.395KB	edt ren
QRBitBuffer.js	0.723KB	edt ren
QRErrorCorrectLevel.js	0.06KB	edt ren
QRMaskPattern.js	0.163KB	edt ren
QRMath.js	0.7KB	edt ren
QRMode.js	0.151KB	edt ren
QRPolynomial.js	1.365KB	edt ren
QRRSBlock.js	5.717KB	edt ren
QRUtil.js	8.295KB	edt ren
index.js	10.867KB	edt ren

var QRMath = require('./QRMath');

function QRPolynomial(num, shift) {
	if (num.length === undefined) {
		throw new Error(num.length + "/" + shift);
	}

var offset = 0;

while (offset < num.length && num[offset] === 0) {
		offset++;
	}

this.num = new Array(num.length - offset + shift);
	for (var i = 0; i < num.length - offset; i++) {
		this.num[i] = num[i + offset];
	}
}

QRPolynomial.prototype = {

get : function(index) {
		return this.num[index];
	},
	
	getLength : function() {
		return this.num.length;
	},
	
	multiply : function(e) {
	
		var num = new Array(this.getLength() + e.getLength() - 1);
	
		for (var i = 0; i < this.getLength(); i++) {
			for (var j = 0; j < e.getLength(); j++) {
				num[i + j] ^= QRMath.gexp(QRMath.glog(this.get(i) ) + QRMath.glog(e.get(j) ) );
			}
		}
	
		return new QRPolynomial(num, 0);
	},
	
	mod : function(e) {
	
		if (this.getLength() - e.getLength() < 0) {
			return this;
		}
	
		var ratio = QRMath.glog(this.get(0) ) - QRMath.glog(e.get(0) );
	
		var num = new Array(this.getLength() );
		
		for (var i = 0; i < this.getLength(); i++) {
			num[i] = this.get(i);
		}
		
		for (var x = 0; x < e.getLength(); x++) {
			num[x] ^= QRMath.gexp(QRMath.glog(e.get(x) ) + ratio);
		}
	
		// recursive call
		return new QRPolynomial(num, 0).mod(e);
	}
};

module.exports = QRPolynomial;