rational.js vs fraction.js vs ratio.js - subtract, multiply, add, divide

JavaScript performance comparison

Revision 10 of this test case created

Info

Comparing the performance of various rational number libraries for basic arithmetic

Preparation code

<script src="http://acerix.github.com/rational.js/releases/rationaljs.alpha.js">
</script>
<script src="https://raw.github.com/ekg/fraction.js/master/fraction.js"></script>
<script src="https://raw.github.com/LarryBattle/Ratio.js/master/lib/Ratio-0.4.0.min.js"></script>
<script src="http://blog.livedoor.jp/dankogai/js/rational.txt"></script>
<script>
Benchmark.prototype.setup = function() {
    var test_cases = [
      [3466463461, 134534331],
      [12312337, 334534535],
      [3453453, 3653450],
      [53453453411, 365340],
      [123453453, 3653453450],
      [-173646341, 36345340],
      [245345213, 2353523],
      [212151121, 234234666],
      [234235535, 234234666],
      [-656755537, 65676767]
    ];
   
    var float_1 = 1 / 10;
    var float_2 = 111 / 3;
   
    var rat_1 = rat.fromValues(1, 10);
    var rat_2 = rat.fromValues(111, 3);
   
    var bigrat_1 = bigrat.fromValues(1, 10);
    var bigrat_2 = bigrat.fromValues(111, 3);
   
    var rational_1 = new rational(1, 10);
    var rational_2 = new rational(111, 3);
   
    var ratio_1 = Ratio(1, 10);
    var ratio_2 = Ratio(111, 3);
   
    var frac_1 = new Fraction(1, 10);
    var frac_2 = new Fraction(111, 3);
   
};
</script>

Preparation code output

Test runner

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Testing in unknown unknown
Test Ops/sec
floats
for (var i in test_cases) {
  float_1 = test_cases[i][0] / test_cases[i][1];
  float_2 = ((float_2 - float_1) * float_1 + float_1) / float_1;
}
pending…
rational.js - rat
for (var i in test_cases) {
  rat.set(rat_1, test_cases[i][0], test_cases[i][1]);
  rat.subtract(rat_2, rat_2, rat_1);
  rat.multiply(rat_2, rat_2, rat_1);
  rat.add(rat_2, rat_2, rat_1);
  rat.divide(rat_2, rat_2, rat_1);
}
pending…
fraction.js
for (var i in test_cases) {
  frac_1 = new Fraction( test_cases[i][0], test_cases[i][1] );
  frac_2 = frac_2.subtract(ratio_1).multiply(ratio_1).add(ratio_1).divide(ratio_1);
}
pending…
Ratio.js
for (var i in test_cases) {
  ratio_1 = Ratio( test_cases[i][0], test_cases[i][1] );
  ratio_2 = ratio_2.subtract(ratio_1).simplify().multiply(ratio_1).simplify().add(ratio_1).simplify().divide(ratio_1).simplify();
}
pending…
Ratio.js - only simplify once
for (var i in test_cases) {
  ratio_1 = Ratio( test_cases[i][0], test_cases[i][1] );
  ratio_2 = ratio_2.subtract(ratio_1).multiply(ratio_1).add(ratio_1).divide(ratio_1).simplify();
}
pending…
rational.js - bigrat (arbitrary size)
for (var i in test_cases) {
  bigrat_1 = bigrat.fromValues(test_cases[i][0], test_cases[i][1]);
  bigrat.subtract(bigrat_2, bigrat_2, bigrat_1);
  bigrat.multiply(bigrat_2, bigrat_2, bigrat_1);
  bigrat.add(bigrat_2, bigrat_2, bigrat_1);
  bigrat.divide(bigrat_2, bigrat_2, bigrat_1);
}
pending…
rational.js - rational (chainable)
for (var i in test_cases) {
  rational_1 = new rational( test_cases[i][0], test_cases[i][1] );
  rational_2 = rational_2.sub(rational_1).mul(rational_1).add(rational_1).div(rational_1);
}
pending…

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