random_triangle.h

// Description: Triangle-distributed random numbers

#ifndef PASTELSYS_RANDOM_TRIANGLE_H
#define PASTELSYS_RANDOM_TRIANGLE_H

#include "pastel/sys/mytypes.h"

namespace Pastel
{

    //! Returns a triangle-distributed random real.
    /*!
   This function assumes that
   min = -1, mode = 0, and max = 1.
   */
    template <typename Real>
    Real randomTriangle();

    //! Returns a triangle-distributed random real.
    /*!
   Preconditions:
   leftWidth > 0
   rightWidth > 0
   */
    template <typename Real>
    Real randomTriangle(
        const NoDeduction<Real>& leftWidth,
        const NoDeduction<Real>& rightWidth);

    //! Probability density function of the Triangle distribution.
    template <typename Real>
    Real trianglePdf(
        const NoDeduction<Real>& x);

    //! Probability density function of the Triangle distribution.
    /*!
   Preconditions:
   leftWidth > 0
   rightWidth > 0
   */
    template <typename Real>
    Real trianglePdf(
        const NoDeduction<Real>& x,
        const NoDeduction<Real>& leftWidth,
        const NoDeduction<Real>& rightWidth);

}

#include "pastel/sys/random/random_triangle.hpp"

#endif