# Rev Language Reference

## dnLaplace - Laplace Distribution

Laplace distribution with mean equal to ‘mean’ and scale equal to ‘scale’.

### Usage

dnLaplace(Real mean, RealPos scale)

### Arguments

 mean : Real (pass by const reference) The mean parameter. Default : 0 scale : RealPos (pass by const reference) The scale parameter. Default : 1

### Details

The Laplace distribution has density: f(x) = 1/(2 b) e^-(abs(x-mu)/b) where mu is the mean of the distribution and b the scale.