Spec Beta Pdf

Probability density function for the Beta function.

/*!
 * @class BetaPdf Beta Pdf
 * 
 * @extends Pdf
 * 
 * @headerfile <seqan/random.h>
 * 
 * @brief Probability density function for the Beta function.
 * 
 * @signature template <> class Pdf<Beta>;
 * 
 * @fn BetaPdf::Pdf
 * 
 * @brief Constructor for the beta Pdf.
 * 
 * @signature Pdf::Pdf(alpha, beta[, AlphaBeta()]);
 * @signature Pdf::Pdf(mu, sigma, MeanStdDev());
 * 
 * @param[in] alpha Alpha value for the beta distribution, <tt>double</tt>.
 * @param[in] beta Beta value for the beta distribution, <tt>double</tt>.
 * @param[in] mu Mean value for the beta distribution, <tt>double</tt>.
 * @param[in] sigma Standard deviation value for the beta distribution,
 *                  <tt>double</tt>.
 * 
 * Use the tags <tt>AlphaBeta</tt> and <tt>MeanStdDev</tt> to select the meaning
 * of the two parameters.
 */