dLBPG                   The probability density function of the
                        length-biased power Garima distribution.
pLBPG                   The cumulative density function of the
                        length-biased power Garima distribution.
qLBPG                   The quantile function of the length-biased
                        power Garima distribution.
rLBPG                   Random number generating of the length-biased
                        power Garima distribution
