atan2

Calculates the arc tangent of y / x, returning a value ranging from -π to π.

Special Values
y	x	atan(y, x)
NaN	anything	NaN
anything	NaN	NaN
±0.0	>0.0	±0.0
±0.0	+0.0	±0.0
±0.0	<0.0	±π
±0.0	-0.0	±π
>0.0	±0.0	π/2
<0.0	±0.0	-π/2
>0.0	∞	±0.0
±∞	anything	±π/2
>0.0	-∞	±π
±∞	∞	±π/4
±∞	-∞	±3π/4

real atan2(real y, real x)
double atan2(double y, double x)
pragma(inline, true) @safe pure nothrow @nogc
double
atan2
(
double y
,
double x
)
float atan2(float y, float x)

Examples

import std.math.operations : isClose;
import std.math.constants : PI;
import std.math.algebraic : sqrt;

assert(atan2(1.0, sqrt(3.0)).isClose(PI / 6));

atan2

Examples

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