Run results for: acos vs atan

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

acos

4K/s

atan

82/s

View exact numbers

Test name	Executions per second
✓ acos	3,951 Ops/sec
atan	82 Ops/sec

HTML Preparation code:

acos vs atan

Script Preparation code:

var N = 1000000;
var x = new Float32Array(N);
var y = new Float32Array(N);

for (var i = 0; i < N; ++i ) {
	x[i] = 100* Math.random();
	y[i] = 100* Math.random();
}

Tests:

acos
for (var i = 0; i < N; ++i) { Math.acos(x[i] / Math.sqrt(x[i]*x[i] + y[i]*y[i])); }
atan
for (var i = 0; i < N; ++i) { Math.atan(x[i], y[i]); }