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Function `std.math.trigonometry.cosh`

Calculates the hyperbolic cosine of x.


						
				real cosh
				(
				

				  real x
				

				) pure nothrow @nogc @safe;
				

				

				double cosh
				(
				

				  double x
				

				) pure nothrow @nogc @safe;
				

				

				float cosh
				(
				

				  float x
				

				) pure nothrow @nogc @safe;

Special Values
x	cosh(x)	invalid?
±∞	±0.0	no

Example

import std.math.constants : E;
import std.math.operations : isClose;

writeln(cosh(0.0)); // 1.0
assert(cosh(1.0).isClose((E + 1.0 / E) / 2));

Authors

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

License

Boost License 1.0.