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- Function:
*double***gsl_ran_laplace***(const gsl_rng **`r`, double`a`) -
This function returns a random variate from the Laplace distribution with width

`a`. The distribution is,p(x) dx = {1 \over 2 a} \exp(-|x/a|) dx

for

*-\infty < x < \infty*.

- Function:
*double***gsl_ran_laplace_pdf***(double*`x`, double`a`) This function computes the probability density

*p(x)*at`x`for a Laplace distribution with width`a`, using the formula given above.

- Function:
*double***gsl_cdf_laplace_P***(double*`x`, double`a`) - Function:
*double***gsl_cdf_laplace_Q***(double*`x`, double`a`) - Function:
*double***gsl_cdf_laplace_Pinv***(double*`P`, double`a`) - Function:
*double***gsl_cdf_laplace_Qinv***(double*`Q`, double`a`) These functions compute the cumulative distribution functions

*P(x)*,*Q(x)*and their inverses for the Laplace distribution with width`a`.