FloorReg.h

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// FloorReg.h:
// -------------------
//

#ifndef __IPSDKUTIL_INSTRUCTIONSET_ARITHMETIC_DETAIL_COMMON_FLOORREG_H__
#define __IPSDKUTIL_INSTRUCTIONSET_ARITHMETIC_DETAIL_COMMON_FLOORREG_H__

#include <IPSDKUtil/IPSDKUtilExports.h>
#include <IPSDKUtil/InstructionSet/RegMaskType.h>
#include <IPSDKUtil/InstructionSet/RegType.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/ConditionalAddReg.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/RoundToEvenReg.h>
#include <IPSDKUtil/InstructionSet/Comparison/detail/IsGreaterReg.h>
#include <IPSDKUtil/Tools/ForceInline.h>

namespace ipsdk {
namespace simd {
namespace detail {


template <eInstructionSet::domain IS>
struct FloorReg<IS, ipReal32>
{
    static IPSDK_FORCEINLINE
    typename RegType<IS, ipReal32>::Type
    act(const typename RegType<IS, ipReal32>::Type& in)
    {
        typename RegType<IS, ipReal32>::Type out;
        act(in, out);
        return out;
    }

    static IPSDK_FORCEINLINE
    void
    act(const typename RegType<IS, ipReal32>::Type& in,
        typename RegType<IS, ipReal32>::Type& out)
    {
        typedef typename RegType<IS, ipReal32>::Type Reg;
        Reg inRoundToEven;
        RoundToEvenReg<IS, ipReal32>::act(in, inRoundToEven);
        typename RegMaskType<IS, ipReal32>::Type inRoundToEvenGTIn;
        IsGreaterReg<IS, ipReal32>::act(inRoundToEven, in, inRoundToEvenGTIn);
        ConditionalAddReg<IS, ipReal32>::act(inRoundToEvenGTIn, inRoundToEven, -1.0f, out);
    }
};

template <eInstructionSet::domain IS>
struct FloorReg<IS, ipReal64>
{
    static IPSDK_FORCEINLINE
        typename RegType<IS, ipReal64>::Type
        act(const typename RegType<IS, ipReal64>::Type& in)
    {
        typename RegType<IS, ipReal64>::Type out;
        act(in, out);
        return out;
    }

    static IPSDK_FORCEINLINE
        void
        act(const typename RegType<IS, ipReal64>::Type& in,
            typename RegType<IS, ipReal64>::Type& out)
    {
        typedef typename RegType<IS, ipReal64>::Type Reg;
        typedef typename RegMaskType<IS, ipReal64>::Type RegMask;
        Reg inRoundToEven;
        RoundToEvenReg<IS, ipReal64>::act(in, inRoundToEven);
        RegMask inRoundToEvenGTIn;
        IsGreaterReg<IS, ipReal64>::act(inRoundToEven, in, inRoundToEvenGTIn);
        ConditionalAddReg<IS, ipReal64>::act(inRoundToEvenGTIn, inRoundToEven, -1.0f, out);
    }
};


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

#endif // __IPSDKUTIL_INSTRUCTIONSET_ARITHMETIC_DETAIL_COMMON_FLOORREG_H__