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Added zeta function.

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Till Hoffmann
2016-04-01 13:32:29 +01:00
parent af4ef540bf
commit dd5d390daf
9 changed files with 256 additions and 0 deletions
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5
Eigen/src/Core/GenericPacketMath.h
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@@ -76,6 +76,7 @@ struct default_packet_traits
HasTanh = 0,
HasLGamma = 0,
HasDiGamma = 0,
HasZeta = 0,
HasErf = 0,
HasErfc = 0,
HasIGamma = 0,
@@ -450,6 +451,10 @@ Packet plgamma(const Packet& a) { using numext::lgamma; return lgamma(a); }
/** \internal \returns the derivative of lgamma, psi(\a a) (coeff-wise) */
template<typename Packet> EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pdigamma(const Packet& a) { using numext::digamma; return digamma(a); }
/** \internal \returns the zeta function of two arguments (coeff-wise) */
template<typename Packet> EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pzeta(const Packet& x, const Packet& q) { using numext::zeta; return zeta(x, q); }
/** \internal \returns the erf(\a a) (coeff-wise) */
template<typename Packet> EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS