These functions provide information about the Laplace distribution
with location parameter equal to m and dispersion equal to
s: log hazard.
(See `rmutil` for the d/p/q/r boxcox functions density,
cumulative distribution, quantiles, and random generation).
The Laplace distribution has density
$$
f(y) = \frac{\exp(-abs(y-\mu)/\sigma)}{(2\sigma)}$$
where \(\mu\) is the location parameter of the distribution and
\(\sigma\) is the dispersion.