/** * LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions. * Copyright (C) 2021-2024 Ad5001 * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ // Load prior tests import { describe, it } from "mocha" import { expect } from "chai" import * as Polyfill from "../../src/lib/expr-eval/polyfill.mjs" import { andOperator, cbrt, equal, expm1, hypot, lessThan, log1p, log2, notEqual } from "../../src/lib/expr-eval/polyfill.mjs" describe("Math/Polyfill", () => { describe("#add", function() { it("adds two numbers", function() { expect(Polyfill.add(2, 3)).to.equal(5) expect(Polyfill.add("2", "3")).to.equal(5) }) }) describe("#sub", function() { it("subtracts two numbers", function() { expect(Polyfill.sub(2, 1)).to.equal(1) expect(Polyfill.sub("2", "1")).to.equal(1) }) }) describe("#mul", function() { it("multiplies two numbers", function() { expect(Polyfill.mul(2, 3)).to.equal(6) expect(Polyfill.mul("2", "3")).to.equal(6) }) }) describe("#div", function() { it("divides two numbers", function() { expect(Polyfill.div(10, 2)).to.equal(5) expect(Polyfill.div("10", "2")).to.equal(5) }) }) describe("#mod", function() { it("returns the modulo of two numbers", function() { expect(Polyfill.mod(10, 3)).to.equal(1) expect(Polyfill.mod("10", "3")).to.equal(1) }) }) describe("#concat", function() { it("returns the concatenation of two strings", function() { expect(Polyfill.concat(10, 3)).to.equal("103") expect(Polyfill.concat("abc", "def")).to.equal("abcdef") }) }) describe("#equal", function() { it("returns whether its two arguments are equal", function() { expect(Polyfill.equal(10, 3)).to.be.false expect(Polyfill.equal(10, 10)).to.be.true expect(Polyfill.equal("abc", "def")).to.be.false expect(Polyfill.equal("abc", "abc")).to.be.true }) }) describe("#notEqual", function() { it("returns whether its two arguments are not equal", function() { expect(Polyfill.notEqual(10, 3)).to.be.true expect(Polyfill.notEqual(10, 10)).to.be.false expect(Polyfill.notEqual("abc", "def")).to.be.true expect(Polyfill.notEqual("abc", "abc")).to.be.false }) }) describe("#greaterThan", function() { it("returns whether its first argument is strictly greater than its second", function() { expect(Polyfill.greaterThan(10, 3)).to.be.true expect(Polyfill.greaterThan(10, 10)).to.be.false expect(Polyfill.greaterThan(10, 30)).to.be.false }) }) describe("#lessThan", function() { it("returns whether its first argument is strictly less than its second", function() { expect(Polyfill.lessThan(10, 3)).to.be.false expect(Polyfill.lessThan(10, 10)).to.be.false expect(Polyfill.lessThan(10, 30)).to.be.true }) }) describe("#greaterThanEqual", function() { it("returns whether its first argument is greater or equal to its second", function() { expect(Polyfill.greaterThanEqual(10, 3)).to.be.true expect(Polyfill.greaterThanEqual(10, 10)).to.be.true expect(Polyfill.greaterThanEqual(10, 30)).to.be.false }) }) describe("#lessThanEqual", function() { it("returns whether its first argument is strictly less than its second", function() { expect(Polyfill.lessThanEqual(10, 3)).to.be.false expect(Polyfill.lessThanEqual(10, 10)).to.be.true expect(Polyfill.lessThanEqual(10, 30)).to.be.true }) }) describe("#andOperator", function() { it("returns whether its arguments are both true", function() { expect(Polyfill.andOperator(true, true)).to.be.true expect(Polyfill.andOperator(true, false)).to.be.false expect(Polyfill.andOperator(false, true)).to.be.false expect(Polyfill.andOperator(false, false)).to.be.false expect(Polyfill.andOperator(10, 3)).to.be.true expect(Polyfill.andOperator(10, 0)).to.be.false expect(Polyfill.andOperator(0, 0)).to.be.false }) }) describe("#orOperator", function() { it("returns whether one of its arguments is true", function() { expect(Polyfill.orOperator(true, true)).to.be.true expect(Polyfill.orOperator(true, false)).to.be.true expect(Polyfill.orOperator(false, true)).to.be.true expect(Polyfill.orOperator(false, false)).to.be.false expect(Polyfill.orOperator(10, 3)).to.be.true expect(Polyfill.orOperator(10, 0)).to.be.true expect(Polyfill.orOperator(0, 0)).to.be.false }) }) describe("#inOperator", function() { it("checks if second argument contains first", function() { expect(Polyfill.inOperator("a", ["a", "b", "c"])).to.be.true expect(Polyfill.inOperator(3, [0, 1, 2])).to.be.false expect(Polyfill.inOperator(3, [0, 1, 3, 2])).to.be.true expect(Polyfill.inOperator("a", "abcdef")).to.be.true expect(Polyfill.inOperator("a", "bcdefg")).to.be.false }) }) describe("#sinh, #cosh, #tanh, #asinh, #acosh, #atanh", function() { const EPSILON = 1e-12 for(let x = -.9; x < 1; x += 0.1) { expect(Polyfill.sinh(x)).to.be.approximately(Math.sinh(x), EPSILON) expect(Polyfill.cosh(x)).to.be.approximately(Math.cosh(x), EPSILON) expect(Polyfill.tanh(x)).to.be.approximately(Math.tanh(x), EPSILON) expect(Polyfill.asinh(x)).to.be.approximately(Math.asinh(x), EPSILON) expect(Polyfill.atanh(x)).to.be.approximately(Math.atanh(x), EPSILON) } for(let x = 1.1; x < 10; x += 0.1) { expect(Polyfill.sinh(x)).to.be.approximately(Math.sinh(x), EPSILON) expect(Polyfill.cosh(x)).to.be.approximately(Math.cosh(x), EPSILON) expect(Polyfill.tanh(x)).to.be.approximately(Math.tanh(x), EPSILON) expect(Polyfill.asinh(x)).to.be.approximately(Math.asinh(x), EPSILON) expect(Polyfill.acosh(x)).to.be.approximately(Math.acosh(x), EPSILON) expect(Polyfill.log10(x)).to.be.approximately(Math.log10(x), EPSILON) } }) describe("#trunc", function() { it("returns the decimal part of floats", function() { for(let x = -10; x < 10; x += 0.1) expect(Polyfill.trunc(x)).to.equal(Math.trunc(x)) }) }) describe("#gamma", function() { it("returns the product of factorial(x - 1)", function() { expect(Polyfill.gamma(0)).to.equal(Infinity) expect(Polyfill.gamma(1)).to.equal(1) expect(Polyfill.gamma(2)).to.equal(1) expect(Polyfill.gamma(3)).to.equal(2) expect(Polyfill.gamma(4)).to.equal(6) expect(Polyfill.gamma(5)).to.equal(24) expect(Polyfill.gamma(172)).to.equal(Infinity) expect(Polyfill.gamma(172.3)).to.equal(Infinity) expect(Polyfill.gamma(.2)).to.approximately(4.590_843_712, 1e-8) expect(Polyfill.gamma(5.5)).to.be.approximately(52.34277778, 1e-8) expect(Polyfill.gamma(90.2)).to.equal(4.0565358202825355e+136) }) }) describe("#hypot", function() { it("returns the hypothenus length of a triangle whose length are provided in arguments", function() { for(let x = 0; x < 10; x += 0.3) { expect(Polyfill.hypot(x)).to.be.approximately(Math.hypot(x), Number.EPSILON) for(let y = 0; y < 10; y += 0.3) { expect(Polyfill.hypot(x, y)).to.be.approximately(Math.hypot(x, y), Number.EPSILON) } } }) }) describe("#sign, #cbrt, #exmp1", function() { for(let x = -10; x < 10; x += 0.3) { expect(Polyfill.sign(x)).to.approximately(Math.sign(x), 1e-12) expect(Polyfill.cbrt(x)).to.approximately(Math.cbrt(x), 1e-12) expect(Polyfill.expm1(x)).to.approximately(Math.expm1(x), 1e-12) } }) describe("#log1p, #log2", function() { for(let x = 1; x < 10; x += 0.3) { expect(Polyfill.log1p(x)).to .be.approximately(Math.log1p(x), 1e-12) expect(Polyfill.log2(x)).to.be.approximately(Math.log2(x), 1e-12) } }) })