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- Function:
*double***gsl_ran_logistic***(const gsl_rng **`r`, double`a`) -
This function returns a random variate from the logistic distribution. The distribution function is,

p(x) dx = { \exp(-x/a) \over a (1 + \exp(-x/a))^2 } dx

for

*-\infty < x < +\infty*.

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

*p(x)*at`x`for a logistic distribution with scale parameter`a`, using the formula given above.

- Function:
*double***gsl_cdf_logistic_P***(double*`x`, double`a`) - Function:
*double***gsl_cdf_logistic_Q***(double*`x`, double`a`) - Function:
*double***gsl_cdf_logistic_Pinv***(double*`P`, double`a`) - Function:
*double***gsl_cdf_logistic_Qinv***(double*`Q`, double`a`) These functions compute the cumulative distribution functions

*P(x)*,*Q(x)*and their inverses for the logistic distribution with scale parameter`a`.