#
Fortran Wiki

cosh

## Description

`cosh(x)`

computes the hyperbolic cosine of `x`

.

## Standard

FORTRAN 77 and later, for a complex argument Fortran 2008 or later

## Class

Elemental function

## Syntax

`x = cosh(x)`

## Arguments

`x`

- The type shall be `real`

or `complex`

.

## Return value

The return value has same type and kind as `x`

. If `x`

is complex, the imaginary part of the result is in radians. If `x`

is `real`

, the return value has a lower bound of one, $\cosh(x) \geq 1$.

## Example

```
program test_cosh
real(8) :: x = 1.0_8
x = cosh(x)
end program test_cosh
```

## See also

Inverse function: acosh

Revised on April 4, 2016 12:52:57
by

Jason Blevins
(128.146.137.52)
(878 characters / 0.0 pages)