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Function std.math.atan2

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

y x atan(y, x) anything anything ±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

Prototypes

real atan2(
  real y,
  real x
) pure nothrow @nogc @trusted;

double atan2(
  double y,
  double x
) pure nothrow @nogc @safe;

float atan2(
  float y,
  float x
) pure nothrow @nogc @safe;

Authors

Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw

License

Boost License 1.0.

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