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Math.abs vs two comparisons

Benchmark created by Mike on February 19, 2015

Description

Is it faster to compare against the absolute value of a number or make two comparisons?

Test runner

Ready to run.

Test Ops/sec

Math.abs

Testing in
Test	Ops/sec
Math.abs	`var sign = (Math.random() >= 0.5) ? 1 : -1, x = Math.random() * 2 * sign, y; if (Math.abs(x) > 1) { y = Math.random(); }`	ready
Comparisons	`var sign = (Math.random() >= 0.5) ? 1 : -1, x = Math.random() * 2 * sign, y; if (x > 1 \|\| x < 1) { y = Math.random(); }`	ready

var sign = (Math.random() >= 0.5) ? 1 : -1,
    x = Math.random() * 2 * sign,
    y;
if (Math.abs(x) > 1) {
    y = Math.random();
}

ready

Comparisons

var sign = (Math.random() >= 0.5) ? 1 : -1,
    x = Math.random() * 2 * sign,
    y;
if (x > 1 || x < 1) {
    y = Math.random();
}

ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published by Mike on February 19, 2015