Run results for: acos vs atan

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 OPR/126.0.0.0 (Edition developer)

Browser: Opera 126

Operating system: Windows

Device Platform: Desktop

Date tested: 7 months ago

atan

117/s

acos

57/s

View exact numbers

Test name	Executions per second
✓ atan	117 Ops/sec
acos	57 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]); }