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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;
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
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.