public static double g01qt(
	double x
)

Public Shared Function g01qt ( _
	x As Double _
) As Double

public:
static double g01qt(
	double x
)

static member g01qt : 
        x : float -> float 

g01qt returns the value of the second moment ${\Phi }_2\left(x\right)$ of the Landau density function.

g01qt evaluates an approximation to the second moment ${\Phi }_2\left(x\right)$ of the Landau density function given by where $\varphi \left(\lambda \right)$ is described in g01mt, using piecewise approximation by rational functions. Further details can be found in Kölbig and Schorr (1984).

To obtain the value of ${\Phi }_1\left(x\right)$, g01pt can be used.

Kölbig K S and Schorr B (1984) A program package for the Landau distribution Comp. Phys. Comm. 31 97–111

There are no failure exits from this routine.

At least $7$ significant digits are usually correct, but occasionally only $6$. Such accuracy is normally considered to be adequate for applications in experimental physics.

None.

None.

This example evaluates ${\Phi }_2\left(x\right)$ at $x=0.5$, and prints the results.