FNF_gaussreturns the value of the probability density function of the Gaussian, or normal, probability distribution of meanmand standard deviations(represented below by ) atx,f(x;m,σ).F(x;m,σ) is defined by the expression
Fis defined for all values ofxandmand for positive values of .
f(x;0,σ)
Errors
FNF_gausscauses an HTBasic error if its arguments are not all of type REAL or if the value ofSis negative or zero.