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# Sine Integral (G Dataflow)

Version:
Last Modified: January 9, 2017

Evaluates the sine integral for any real nonnegative number.

## x

A real nonnegative number.

## error in

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

Default: No error

## Si(x)

Result of the calculation of the sine integral for the given value of x.

## error out

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

## Algorithm for Evaluating the Sine Integral

The following equation defines the sine integral.

$Si\left(x\right)={\int }_{0}^{x}\frac{\mathrm{sin}\left(t\right)}{t}dt$

The following illustration shows the graph of the sine integral in the interval (0, 15).

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported