__Random:__double**gsl_ran_cauchy***(const gsl_rng **`r`, double`a`)-
This function returns a random variate from the Cauchy distribution with
scale parameter
`a`. The probability distribution for Cauchy random variates is,for @math{x} in the range @math{-\infty} to @math{+\infty}. The Cauchy distribution is also known as the Lorentz distribution.

__Function:__double**gsl_ran_cauchy_pdf***(double*`x`, double`a`)-
This function computes the probability density @math{p(x)} at
`x`for a Cauchy distribution with scale parameter`a`, using the formula given above.

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