mirror of
https://github.com/josdejong/mathjs.git
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c5971b371a
* chore(package): update standard to version 12.0.0
* update to new lint version with --fix
I believe this mainly adds whitespace to `{}`'s.
* Replace assert.equal with assert.strictEqual
This breaks a lot of tests which I will endevour to fix in the next
commits.
* Fix most errors due to assert.strictEquals
Some instances of `strictEquals` are replaced by `deepEquals`.
`toString` has been used to make some string comparisions explicit.
Tests will still fail untill #1236 and #1237 are fixed.
* Fix assertion erros due to -0
With node 10, assert.strictEqual no longer considers `0 === -0`.
I missed these first time round as I was using node 8.
* Put toString correct side of bracket
I was converting the constructor to a string rather
than the result of the computation. Oops.
* Fixed #1236: quantileSeq has inconsistant return
* Update package-lock
* Fixed #1237: norm sometimes returning a complex number instead of number
* Fix cli tests
* More changes for standardjs, and fixes in unit tests
84 lines
2.3 KiB
JavaScript
84 lines
2.3 KiB
JavaScript
// test performance of the expression parser in node.js
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// browserify benchmark/expression_parser.js -o ./benchmark_expression_parser.js
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const assert = require('assert')
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const Benchmark = require('benchmark')
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const padRight = require('pad-right')
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const math = require('../index')
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const getSafeProperty = require('../lib/utils/customs').getSafeProperty
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// expose on window when using bundled in a browser
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if (typeof window !== 'undefined') {
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window['Benchmark'] = Benchmark
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}
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function pad (text) {
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return padRight(text, 40, ' ')
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}
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const expr = '2 + 3 * sin(pi / 4) - 4x'
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let scope = { x: 2 }
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const compiled = math.parse(expr).compile(math, {})
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const sin = getSafeProperty(math, 'sin')
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const pi = getSafeProperty(math, 'pi')
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const compiledPlainJs = {
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eval: function (scope) {
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return 2 + 3 * ('sin' in scope ? getSafeProperty(scope, 'sin') : sin)(('pi' in scope ? getSafeProperty(scope, 'pi') : pi) / 4) - 4 * scope['x']
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}
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}
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const correctResult = -3.878679656440358
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console.log('expression:', expr)
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console.log('scope:', scope)
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console.log('result:', correctResult)
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assertApproxEqual(compiled.eval(scope), correctResult, 1e-7)
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assertApproxEqual(compiledPlainJs.eval(scope), correctResult, 1e-7)
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let total = 0
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let nodes = []
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const suite = new Benchmark.Suite()
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suite
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.add(pad('(plain js) evaluate'), function () {
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total += compiledPlainJs.eval(scope)
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})
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.add(pad('(mathjs) evaluate'), function () {
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total += compiled.eval(scope)
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})
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.add(pad('(mathjs) parse, compile, evaluate'), function () {
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total += math.parse(expr).compile().eval(scope)
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})
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.add(pad('(mathjs) parse, compile'), function () {
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const node = math.parse(expr).compile()
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nodes.push(node)
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})
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.add(pad('(mathjs) parse'), function () {
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const node = math.parse(expr)
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nodes.push(node)
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})
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.on('cycle', function (event) {
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console.log(String(event.target))
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})
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.on('complete', function () {
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// we count at total to prevent the browsers from not executing
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// the benchmarks ("dead code") when the results would not be used.
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if (total > 1e6) {
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console.log('')
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} else {
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console.log('')
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}
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})
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.run()
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function assertApproxEqual (actual, expected, tolerance) {
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const diff = Math.abs(expected - actual)
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if (diff > tolerance) assert.strictEqual(actual, expected)
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else assert.ok(diff <= tolerance, actual + ' === ' + expected)
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}
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