Commit 0ac2a2df authored by Chip Kerchner's avatar Chip Kerchner Committed by Rasmus Munk Larsen
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Prevent predux_half for DoublePacket from accidentally catching complex Packets of size >= 16 

!2125
parent 4d05fcf8

Eigen/src/Core/products/GeneralBlockPanelKernel.h

+3 −1
Original line number Diff line number Diff line
@@ -650,7 +650,9 @@ const DoublePacket<Packet>& predux_half(const DoublePacket<Packet>& a, 


template <typename Packet>

DoublePacket<typename unpacket_traits<Packet>::half> predux_half(

    const DoublePacket<Packet>& a, std::enable_if_t<unpacket_traits<Packet>::size == 16>* = 0) {

    const DoublePacket<Packet>& a,

    std::enable_if_t<unpacket_traits<Packet>::size >= 16 &&

                     !NumTraits<typename unpacket_traits<Packet>::type>::IsComplex>* = 0) {

  // yes, that's pretty hackish :(

  DoublePacket<typename unpacket_traits<Packet>::half> res;

  typedef std::complex<typename unpacket_traits<Packet>::type> Cplx;