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41 lines
1.4 KiB
JavaScript
41 lines
1.4 KiB
JavaScript
// test bignumber utils
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var assert = require('assert');
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var BigNumber = require('decimal.js');
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var Big32 = BigNumber.clone({precision: 32});
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var Big64 = BigNumber.clone({precision: 64});
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var constants = require('../../../lib/utils/bignumber/constants');
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describe('bignumber', function() {
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it('should calculate a bignumber e', function() {
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assert.equal(constants.e(Big32),
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'2.7182818284590452353602874713527');
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assert.equal(constants.e(Big64),
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'2.718281828459045235360287471352662497757247093699959574966967628');
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});
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it('should calculate a bignumber pi', function() {
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assert.equal(constants.pi(Big32),
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'3.1415926535897932384626433832795');
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assert.equal(constants.pi(Big64),
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'3.141592653589793238462643383279502884197169399375105820974944592');
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});
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it('should calculate a bignumber tau', function() {
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assert.equal(constants.tau(Big32),
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'6.283185307179586476925286766559');
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assert.equal(constants.tau(Big64),
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'6.283185307179586476925286766559005768394338798750211641949889184');
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});
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it('should calculate a bignumber phi', function() {
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// FIXME: round-off error
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//assert.equal(bignumber.phi(32), '1.6180339887498948482045868343656');
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assert.equal(constants.phi(Big32),
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'1.6180339887498948482045868343657');
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assert.equal(constants.phi(Big64),
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'1.618033988749894848204586834365638117720309179805762862135448623');
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});
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});
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