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Diffstat (limited to 'Eigen/src/Core/GlobalFunctions.h')
| -rw-r--r-- | Eigen/src/Core/GlobalFunctions.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Eigen/src/Core/GlobalFunctions.h b/Eigen/src/Core/GlobalFunctions.h index 9c97ccb0e..e489cefec 100644 --- a/Eigen/src/Core/GlobalFunctions.h +++ b/Eigen/src/Core/GlobalFunctions.h @@ -213,6 +213,28 @@ namespace Eigen ); } + /** \cpp11 \returns an expression of the coefficient-wise betainc(\a x, \a a, \a b) to the given arrays. + * + * This function computes the regularized incomplete beta function (integral). + * + * \note This function supports only float and double scalar types in c++11 mode. To support other scalar types, + * or float/double in non c++11 mode, the user has to provide implementations of betainc(T,T,T) for any scalar + * type T to be supported. + * + * \sa Eigen::betainc(), Eigen::lgamma() + */ + template<typename ArgADerived, typename ArgBDerived, typename ArgXDerived> + inline const Eigen::CwiseTernaryOp<Eigen::internal::scalar_betainc_op<typename ArgXDerived::Scalar>, const ArgADerived, const ArgBDerived, const ArgXDerived> + betainc(const Eigen::ArrayBase<ArgADerived>& a, const Eigen::ArrayBase<ArgBDerived>& b, const Eigen::ArrayBase<ArgXDerived>& x) + { + return Eigen::CwiseTernaryOp<Eigen::internal::scalar_betainc_op<typename ArgXDerived::Scalar>, const ArgADerived, const ArgBDerived, const ArgXDerived>( + a.derived(), + b.derived(), + x.derived() + ); + } + + /** \returns an expression of the coefficient-wise zeta(\a x, \a q) to the given arrays. * * It returns the Riemann zeta function of two arguments \a x and \a q: |