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Function std.math.trigonometry.tanh

Calculates the hyperbolic tangent of x.

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

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

float tanh (
  float x
) pure nothrow @nogc @safe;

Special Values
x tanh(x) invalid?
±0.0 ±0.0 no
±∞ ±1.0 no


import std.math.operations : isClose;
import std.math.traits : isIdentical;

assert(isIdentical(tanh(0.0), 0.0));
assert(tanh(1.0).isClose(sinh(1.0) / cosh(1.0)));


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


Boost License 1.0.