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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

Example

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)));

Authors

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

License

Boost License 1.0.