rational vs float - subtract, multiply, add, divide

JavaScript performance comparison

Revision 5 of this test case created

Preparation code

<script src="//raw.github.com/acerix/rational.js/master/src/rat.js">
</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);
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
native float approximation
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 calculation
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…

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