Run results for: modulo vs bitlogic

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser: Chrome 104

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
modulo	6941566.0 Ops/sec
bit logic	6910808.0 Ops/sec

HTML Preparation code:

<div></div>

Script Preparation code:

const BIT_NOISE1 = 0xB5297A4D;
const BIT_NOISE2 = 0x68E31DA4;
const BIT_NOISE3 = 0x1B56C4E9;
const CAP = 1 << 32;

function squirrel(x, seed) {
  let mangled = x;
  mangled *= BIT_NOISE1;
  mangled += seed;
  mangled ^= (mangled >> 8);
  mangled += BIT_NOISE2;
  mangled ^= (mangled << 8);
  mangled *= BIT_NOISE3;
  mangled ^= (mangled >> 8);
  return mangled;
}

function slow(x) {
 let a = squirrel(x, 4);
 return a % CAP;
}

function fast(x) {
 let a = squirrel(x, 4);
 return a & (CAP - 1);
}

Tests:

modulo
let a = 0 for (var t=0; t < 1; t++) { a += slow(t+1); }
bit logic
let a = 0 for (var t=0; t < 1; t++) { a += fast(t+1); }

Run results for: modulo vs bitlogic

nothing!

modulo

bit logic