# Hyperbolic Cosine Integral (G Dataflow)

Version:

Computes the hyperbolic cosine integral function.

## x

The input argument.

Default: 0

## error in

Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.

Default: No error

## Chi(x)

Value of the hyperbolic cosine integral.

## error out

Error information. The node produces this output according to standard error behavior.

## Algorithm for Computing the Hyperbolic Cosine Integral Function

The following equation defines the hyperbolic cosine integral function.

$Chi\left(x\right)=\gamma +\mathrm{ln}\left(|x|\right)+{\int }_{0}^{x}\frac{\mathrm{cosh}\left(t\right)-1}{t}dt$

where $\gamma$ is Euler's constant.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported