"use strict";
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/*
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* Copyright 2007 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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var IllegalArgumentException_1 = require("../../IllegalArgumentException");
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/**
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* <p>This class contains utility methods for performing mathematical operations over
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* the Galois Fields. Operations use a given primitive polynomial in calculations.</p>
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*
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* <p>Throughout this package, elements of the GF are represented as an {@code int}
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* for convenience and speed (but at the cost of memory).
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* </p>
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*
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* @author Sean Owen
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* @author David Olivier
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*/
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var AbstractGenericGF = /** @class */ (function () {
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function AbstractGenericGF() {
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}
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/**
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* @return 2 to the power of a in GF(size)
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*/
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AbstractGenericGF.prototype.exp = function (a) {
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return this.expTable[a];
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};
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/**
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* @return base 2 log of a in GF(size)
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*/
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AbstractGenericGF.prototype.log = function (a /*int*/) {
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if (a === 0) {
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throw new IllegalArgumentException_1.default();
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}
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return this.logTable[a];
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};
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/**
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* Implements both addition and subtraction -- they are the same in GF(size).
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*
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* @return sum/difference of a and b
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*/
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AbstractGenericGF.addOrSubtract = function (a /*int*/, b /*int*/) {
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return a ^ b;
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};
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return AbstractGenericGF;
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}());
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exports.default = AbstractGenericGF;
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