floorlog2

Benchmark created on March 31, 2024

Setup

function l( x ) {
    let y = 0;
    while ( x > 1 ) {

        y += 1;
        x >>= 1;

    }
    return y;
}

function l2( x ) {
    return Math.floor( Math.log2(x) );
}

function l3( x ) {
    return 31 - Math.clz32( x );
}

Test runner

for ( let i = 0; i < 1024; i++ ) l(i);

for ( let i = 0; i < 1024; i++ ) l2(i);

for ( let i = 0; i < 1024; i++ ) l3(i);

Revisions

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

• Revision 1: published on March 31, 2024