| [section:gamma_derivatives Derivative of the Incomplete Gamma Function] |
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| [h4 Synopsis] |
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| `` |
| #include <boost/math/special_functions/gamma.hpp> |
| `` |
| |
| namespace boost{ namespace math{ |
| |
| template <class T1, class T2> |
| ``__sf_result`` gamma_p_derivative(T1 a, T2 x); |
| |
| template <class T1, class T2, class ``__Policy``> |
| ``__sf_result`` gamma_p_derivative(T1 a, T2 x, const ``__Policy``&); |
| |
| }} // namespaces |
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| [h4 Description] |
| |
| This function find some uses in statistical distributions: it |
| implements the partial derivative with respect to /x/ of the incomplete |
| gamma function. |
| |
| [equation derivative1] |
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| [optional_policy] |
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| Note that the derivative of the function __gamma_q can be obtained by negating |
| the result of this function. |
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| The return type of this function is computed using the __arg_pomotion_rules |
| when T1 and T2 are different types, otherwise the return type is simply T1. |
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| [h4 Accuracy] |
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| Almost identical to the incomplete gamma function __gamma_p: refer to |
| the documentation for that function for more information. |
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| [h4 Implementation] |
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| This function just expose some of the internals of the incomplete |
| gamma function __gamma_p: refer to the documentation for that function |
| for more information. |
| |
| [endsect][/section Derivative of the Incomplete Gamma Functions] |
| [/ |
| Copyright 2006 John Maddock and Paul A. Bristow. |
| Distributed under the Boost Software License, Version 1.0. |
| (See accompanying file LICENSE_1_0.txt or copy at |
| http://www.boost.org/LICENSE_1_0.txt). |
| ] |
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