FNP_laplacereturns the value of the integral of the LaPlace probability density function of parametersaandbatx,P(x;a,b).P(x;a,b) is defined by the expression
Pis defined for all positive values ofb.
P(x;0,b)
Errors
FNP_laplacecauses an HTBasic error if its arguments are not all of type REAL or if the value ofbis negative or zero.