Computes the sine integral.

Namespace:  Meta.Numerics.Functions
Assembly:  Meta.Numerics (in Meta.Numerics.dll) Version: 1.4.0.0 (1.4.0.0)

Syntax

         
 C#  Visual Basic  Visual C++ 
public static double IntegralSi(
	double x
)
Public Shared Function IntegralSi ( _
	x As Double _
) As Double
public:
static double IntegralSi(
	double x
)

Parameters

x
Double
The argument.

Return Value

The value of Si(x).

Remarks

The sine integral can be defined via Si(x) = 0∫xdt sin(t)/t.

The sine integral is zero at the origin and executes a damped oscilation arround π/2 as its argument increases.

See Also