EuropeanBSPut_Greeks
==============================================

Purpose
----------------

Computes Delta, Gamma, Theta, Vega, and Rho for European put options using Black, Scholes, and Merton method.

Format
----------------
.. function:: { d, g, t, v, rh } = EuropeanBSPut_Greeks(S0, K, r, div, tau, sigma)

    :param S0: current price.
    :type S0: scalar

    :param K: strike prices.
    :type K: Mx1 vector

    :param r: risk free rate.
    :type r: scalar

    :param div: continuous dividend yield.
    :type div: scalar

    :param tau: elapsed time to exercise in annualized days of trading.
    :type tau: scalar

    :param sigma: volatility.
    :type sigma: scalar

    :return d: delta.

    :rtype d: Mx1 vector

    :return g: gamma.

    :rtype g: Mx1 vector

    :return t: theta.

    :rtype t: Mx1 vector

    :return v: vega.

    :rtype v: Mx1 vector

    :return rh: rho.

    :rtype rh: Mx1 vector

Global Input
------------

.. data:: _fin_thetaType

    scalar, if 1, one day look ahead, else, infinitesmal. Default = 0.

.. data:: _fin_epsilon

    scalar, finite difference stepsize. Default = 1e-8.

Examples
----------------

::

    S0 = 305;
    K = 300;
    r = .08;
    sigma = .25;
    tau = .33;
    print EuropeanBSPut_Greeks(S0, K, r, 0, tau, sigma);

produces:

::

    -0.3554
       0.0085
     -15.1307
      65.2563
    -39.54861

Source
------

finprocs.src

.. seealso:: Functions :func:`EuropeanBSPut_ImpVol`, :func:`EuropeanBSPut`, :func:`EuropeanBSCall_Greeks`, :func:`EuropeanBinomPut_Greeks`