asm-js

JavaScript performance comparison

Revision 2 of this test case created

Preparation code

<script>
function DiagModule(stdlib) {
    "use asm";

    var sqrt = stdlib.Math.sqrt;

    function square(x) {
        x = +x;
        return +(x*x);
    }

    function diag(x, y) {
        x = +x;
        y = +y;
        return +sqrt(square(x) + square(y));
    }

    return { diag: diag };
}
function DiagSlowModule(stdlib) {
   

    var sqrt = stdlib.Math.sqrt;

    function square(x) {
        x = +x;
        return +(x*x);
    }

    function diag(x, y) {
        x = +x;
        y = +y;
        return +sqrt(square(x) + square(y));
    }

    return { diag: diag };
}


var fast = DiagModule(window);
var slow = DiagSlowModule(window);
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
fast
fast.diag(3, 4)
pending…
slow
slow.diag(3, 4);       // 50
pending…

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