devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

zeta and polygamma are not unary functions, but binary ones.

Browse Source
This commit is contained in:
Gael Guennebaud
2016-05-19 18:34:16 +02:00
parent 7a54032408
commit 6761c64d60
3 changed files with 70 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
Eigen/src/plugins/ArrayCwiseBinaryOps.h
View File

@@ -298,3 +298,37 @@ operator^(const EIGEN_CURRENT_STORAGE_BASE_CLASS<OtherDerived> &other) const
THIS_METHOD_IS_ONLY_FOR_EXPRESSIONS_OF_BOOL);
return CwiseBinaryOp<internal::scalar_boolean_xor_op, const Derived, const OtherDerived>(derived(),other.derived());
}
// NOTE disabled until we agree on argument order
#if 0
/** \cpp11 \returns an expression of the coefficient-wise polygamma function.
*
* It returns the \a n -th derivative of the digamma(psi) evaluated at \c *this.
*
* \warning Be careful with the order of the parameters: x.polygamma(n) is equivalent to polygamma(n,x)
*
* \sa Eigen::polygamma()
*/
template<typename DerivedN>
inline const CwiseBinaryOp<internal::scalar_polygamma_op<Scalar>, const DerivedN, const Derived>
polygamma(const EIGEN_CURRENT_STORAGE_BASE_CLASS<DerivedN> &n) const
{
return CwiseBinaryOp<internal::scalar_polygamma_op<Scalar>, const DerivedN, const Derived>(n.derived(), this->derived());
}
#endif
/** \cpp11 \returns an expression of the coefficient-wise zeta function.
*
* It returns the Riemann zeta function of two arguments \c *this and \a q:
*
* \param *this is the exposent, it must be > 1
* \param q is the shift, it must be > 0
*
* \sa Eigen::zeta()
*/
template<typename DerivedQ>
inline const CwiseBinaryOp<internal::scalar_zeta_op<Scalar>, const Derived, const DerivedQ>
zeta(const EIGEN_CURRENT_STORAGE_BASE_CLASS<DerivedQ> &q) const
{
return CwiseBinaryOp<internal::scalar_zeta_op<Scalar>, const Derived, const DerivedQ>(this->derived(), q.derived());
}