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exactnumber

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Arbitrary-precision decimals. Enables making math calculations with rational numbers, without precision loss.

github.com/Daninet/exactnumber

Daninet/exactnumber

61 lines (51 loc) • 2.34 kB
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// import { atan, asin, acos } from './inverse_trigonometry'; // import { compareError, testStability } from '../testHelper.test'; // describe('inverse trigonometry', () => { // it('atan', () => { // expect(atan(0, 30).toString()).toBe('0'); // expect(atan(1, 30).toString()).toBe('0.785398163397448309615660845819'); // expect(atan(-1, 30).toString()).toBe('-0.785398163397448309615660845819'); // const range = [-5, 5]; // for (let i = range[0]; i <= range[1]; i += 0.05) { // const jsResult = Math.atan(i).toString(); // compareError(atan(i.toString(), 30), jsResult); // } // }); // it('atan many digits', () => { // testStability((decimals) => atan('7/12', decimals), 150); // }); // it('asin', () => { // expect(asin(0, 30).toString()).toBe('0'); // expect(asin(1, 15).toString()).toBe('1.570796326794896'); // expect(asin(-1, 15).toString()).toBe('-1.570796326794896'); // expect(asin('1/2', 15).toString()).toBe('0.523598775598298'); // expect(asin('-1/2', 15).toString()).toBe('-0.523598775598298'); // expect(() => asin('-1.1', 30)).toThrow('Out of range'); // expect(() => asin('1.1', 30)).toThrow('Out of range'); // const range = [-1, 1]; // for (let i = range[0]; i <= range[1]; i += 0.01) { // const jsResult = Math.asin(i).toString(); // compareError(asin(i.toString(), 30), jsResult); // } // }); // it('asin many digits', () => { // testStability((decimals) => asin('7/12', decimals), 120); // }); // it('acos', () => { // expect(acos(0, 15).toString()).toBe('1.570796326794896'); // expect(acos(1, 15).toString()).toBe('0'); // expect(acos(-1, 15).toString()).toBe('3.141592653589793'); // expect(acos('1/2', 15).toString()).toBe('1.047197551196597'); // expect(acos('-1/2', 15).toString()).toBe('2.094395102393195'); // expect(() => acos('-1.1', 30)).toThrow('Out of range'); // expect(() => acos('1.1', 30)).toThrow('Out of range'); // const range = [-1, 1]; // for (let i = range[0]; i <= range[1]; i += 0.01) { // const jsResult = Math.acos(i).toString(); // compareError(acos(i.toString(), 30), jsResult); // } // }); // it('acos many digits', () => { // testStability((decimals) => acos('7/12', decimals), 110); // }); // });