153 lines
3.1 KiB
JavaScript
153 lines
3.1 KiB
JavaScript
'use strict';
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var _interopRequireWildcard = function (obj) { return obj && obj.__esModule ? obj : { 'default': obj }; };
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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var _Equation = require('equation');
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var _Equation2 = _interopRequireWildcard(_Equation);
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/*
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* Operators and Functions
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* fn: function used to evaluate value
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* format: the format using which arguments are parsed:
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* 0 indicates an argument and 1 indicates the operator
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* e.g: factorial is 01, add is 010, like 2!, 2+2
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* precedence: determines which operators should be evaluated first
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* the lower the value, the higher the precedence
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* hasExpression: determines if any of the operator arguments are an expression
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* This way, arguments will not be solved by equation and instead
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* you have to call solve on each argument yourself.
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* You get the arguments as parsed arrays sigma(0, 5, 2@) becomes
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* sigma(0, 5, [2, '*', '@']). See sigma operator for reference
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*/
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exports['default'] = {
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'^': {
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fn: function fn(a, b) {
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return Math.pow(a, b);
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},
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format: '010',
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precedence: 0
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},
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'*': {
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fn: function fn(a, b) {
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return a * b;
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},
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format: '010',
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precedence: 1
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},
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'/': {
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fn: function fn(a, b) {
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return a / b;
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},
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format: '010',
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precedence: 1
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},
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'%': {
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fn: function fn(a, b) {
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return a % b;
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},
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format: '010',
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precedence: 1
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},
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'\\': {
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fn: function fn(a, b) {
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return Math.floor(a / b);
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},
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format: '010',
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precedence: 1
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},
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'+': {
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fn: function fn(a, b) {
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return a + b;
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},
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format: '010',
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precedence: 2
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},
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'-': {
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fn: function fn(a, b) {
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return a - b;
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},
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format: '010',
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precedence: 2
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},
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'!': {
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fn: function fn(a) {
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var sum = 1;
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for (var i = 0; i < a; ++i) {
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sum *= i;
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}
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return sum;
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},
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format: '01',
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precedence: 2
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},
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log: {
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fn: Math.log,
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format: '10',
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precedence: -1
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},
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ln: {
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fn: Math.log,
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format: '10',
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precedence: -1
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},
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lg: {
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fn: function fn(a) {
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return Math.log(a) / Math.log(2);
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},
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format: '10',
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precedence: -1
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},
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sin: {
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fn: Math.sin,
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format: '10',
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precedence: -1
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},
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cos: {
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fn: Math.cos,
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format: '10',
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precedence: -1
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},
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tan: {
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fn: Math.tan,
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format: '10',
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precedence: -1
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},
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cot: {
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fn: Math.cot,
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format: '10',
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precedence: -1
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},
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round: {
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fn: Math.round,
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format: '10',
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precedence: -1
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},
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floor: {
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fn: Math.floor,
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format: '10',
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precedence: -1
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},
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sigma: {
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fn: function fn(from, to, expression) {
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var expr = expression.join('').replace(/,/g, '');
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var regex = new RegExp(ITERATOR_SIGN, 'g');
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var sum = 0;
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for (var i = from; i <= to; i++) {
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sum += _Equation2['default'].solve(expr.replace(regex, i));
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}
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return sum;
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},
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format: '1000',
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hasExpression: true,
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precedence: -1
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}
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};
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var ITERATOR_SIGN = '@';
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module.exports = exports['default']; |