View source code Display the source code in std/math.d from which this page was generated on github. Improve this page Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone. Page wiki View or edit the community-maintained wiki page associated with this page.

Function std.math.atanh

Calculates the inverse hyperbolic tangent of x, returning a value from ranging from -1 to 1.

Mathematically, atanh(x) = log( (1+x)/(1-x) ) / 2

-∞..∞ -1..1 x, acosh(x) , ±0, ±0 -∞, -0

Prototypes

real atanh(
  real x
) pure nothrow @nogc @safe;

double atanh(
  double x
) pure nothrow @nogc @safe;

float atanh(
  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.

Comments