- Type: System..::..DoubleOn entry: the argument of the function.
g01qt evaluates an approximation to the second moment of the Landau density function given by
where 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 , 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 significant digits are usually correct, but occasionally only . Such accuracy is normally considered to be adequate for applications in experimental physics.
This example evaluates at , and prints the results.