MaxPack.h

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// MaxPack.h:
// -------------------
//

#ifndef __IPSDKUTIL_INSTRUCTIONSET_REDUCTION_DETAIL_AVX2_MAXPACK_H__
#define __IPSDKUTIL_INSTRUCTIONSET_REDUCTION_DETAIL_AVX2_MAXPACK_H__

#include <IPSDKUtil/IPSDKUtilExports.h>
#include <IPSDKUtil/InstructionSet/cast.h>
#include <IPSDKUtil/Tools/ForceInline.h>

namespace ipsdk {
namespace simd {
namespace detail {
namespace reduction {


template <typename T>
struct MaxPack<eInstructionSet::eIS_Avx2, T,
    typename boost::enable_if_c<boost::is_integral<T>::value
        && sizeof(T) == 1>::type>
{    
    static IPSDK_FORCEINLINE
    T
    act(const BasePack<ePackType::ePT_Avx, T>& in)
    {
        return reduction::MaxReg<eInstructionSet::eIS_Avx2, T>::act(in._val[0]);
    }
};

template <typename T>
struct MaxPack<eInstructionSet::eIS_Avx2, T,
    typename boost::enable_if_c<boost::is_integral<T>::value
        && sizeof(T) == 2>::type>
{
    static IPSDK_FORCEINLINE
    T
    act(const BasePack<ePackType::ePT_Avx, T>& in)
    {
        const typename AvxType<T>::Type res =
            detail::MaxReg<eInstructionSet::eIS_Avx2, T>::act(
            in._val[0], in._val[1]);
        return reduction::MaxReg<eInstructionSet::eIS_Avx2, T>::act(res);
    }
};

template <typename T>
struct MaxPack<eInstructionSet::eIS_Avx2, T,
    typename boost::enable_if_c<boost::is_integral<T>::value
        && sizeof(T) == 4>::type>
{
    static IPSDK_FORCEINLINE
    T
    act(const BasePack<ePackType::ePT_Avx, T>& in)
    {
        const typename AvxType<T>::Type res0 =
            detail::MaxReg<eInstructionSet::eIS_Avx2, T>::act(
            in._val[0], in._val[1]);
        const typename AvxType<T>::Type res1 =
            detail::MaxReg<eInstructionSet::eIS_Avx2, T>::act(
            res0, in._val[2]);
        const typename AvxType<T>::Type res =
            detail::MaxReg<eInstructionSet::eIS_Avx2, T>::act(
            res1, in._val[3]);
        return reduction::MaxReg<eInstructionSet::eIS_Avx2, T>::act(res);
    }
};

template <typename T>
struct MaxPack<eInstructionSet::eIS_Avx2, T,
    typename boost::enable_if_c<boost::is_integral<T>::value
        && sizeof(T) == 8>::type>
{
    static IPSDK_FORCEINLINE
    T
    act(const BasePack<ePackType::ePT_Avx, T>& in)
    {
        typedef detail::MaxReg<eInstructionSet::eIS_Avx2, T> MaxR;
        typename AvxType<T>::Type res = MaxR::act(in._val[0], in._val[1]);
        res = MaxR::act(res, in._val[2]);
        res = MaxR::act(res, in._val[3]);
        res = MaxR::act(res, in._val[4]);
        res = MaxR::act(res, in._val[5]);
        res = MaxR::act(res, in._val[6]);
        res = MaxR::act(res, in._val[7]);
        
        return reduction::MaxReg<eInstructionSet::eIS_Avx2, T>::act(res);
    }
};

template <>
struct MaxPack<eInstructionSet::eIS_Avx2, ipReal32>
{
    static IPSDK_FORCEINLINE
    ipReal32
    act(const BasePack<ePackType::ePT_Avx, ipReal32>& in)
    {
        return MaxPack<eInstructionSet::eIS_Avx, ipReal32>::act(in);
    }
};

template <>
struct MaxPack<eInstructionSet::eIS_Avx2, ipReal64>
{
    static IPSDK_FORCEINLINE
    ipReal64
    act(const BasePack<ePackType::ePT_Avx, ipReal64>& in)
    {
        return MaxPack<eInstructionSet::eIS_Avx, ipReal64>::act(in);
    }
};


} // end of namespace reduction
} // end of namespace detail
} // end of namespace simd
} // end of namespace ipsdk

#endif // __IPSDKUTIL_INSTRUCTIONSET_REDUCTION_DETAIL_AVX2_MAXREGIMPL_H__