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55 lines
1.5 KiB
Plaintext
55 lines
1.5 KiB
Plaintext
[section:gamma_derivatives Derivative of the Incomplete Gamma Function]
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[h4 Synopsis]
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``
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#include <boost/math/special_functions/gamma.hpp>
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``
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namespace boost{ namespace math{
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template <class T1, class T2>
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``__sf_result`` gamma_p_derivative(T1 a, T2 x);
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template <class T1, class T2, class ``__Policy``>
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``__sf_result`` gamma_p_derivative(T1 a, T2 x, const ``__Policy``&);
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}} // namespaces
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[h4 Description]
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This function find some uses in statistical distributions: it
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implements the partial derivative with respect to /x/ of the incomplete
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gamma function.
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[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
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the result of this function.
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The return type of this function is computed using the __arg_promotion_rules
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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
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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
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gamma function __gamma_p: refer to the documentation for that function
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for more information.
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[endsect][/section Derivative of the Incomplete Gamma Functions]
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[/
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Copyright 2006 John Maddock and Paul A. Bristow.
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt).
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]
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