RoundToNearestIntegralReg.h

// RoundToNearestIntegralReg.h:
// -------------------
//

#ifndef __IPSDKUTIL_INSTRUCTIONSET_ARITHMETIC_DETAIL_COMMON_ROUNDTONEARESTINTEGRALREG_H__
#define __IPSDKUTIL_INSTRUCTIONSET_ARITHMETIC_DETAIL_COMMON_ROUNDTONEARESTINTEGRALREG_H__

#include <IPSDKUtil/IPSDKUtilExports.h>
#include <IPSDKUtil/InstructionSet/RegMaskType.h>
#include <IPSDKUtil/InstructionSet/RegType.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/RoundToNearestIntegralReg.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/AbsReg.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/AddReg.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/FloorReg.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/UnaryMinusReg.h>
#include <IPSDKUtil/InstructionSet/Comparison/detail/IsLessReg.h>
#include <IPSDKUtil/InstructionSet/detail/AssignReg.h>
#include <IPSDKUtil/InstructionSet/Logical/detail/IfElseReg.h>
#include <IPSDKUtil/Tools/ForceInline.h>

namespace ipsdk {
namespace simd {
namespace detail {


template <eInstructionSet::domain IS>
struct RoundToNearestIntegralReg<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;
        typedef typename RegMaskType<IS, ipReal32>::Type RegMask;
        Reg inAbs;
        AbsReg<IS, ipReal32>::act(in, inAbs);
        Reg inAbsRounded;
        Reg half;
        AssignReg<IS, ipReal32>::act(half, 0.5f);
        AddReg<IS, ipReal32>::act(inAbs, half, inAbsRounded);
        FloorReg<IS, ipReal32>::act(inAbsRounded, inAbsRounded);
        Reg minusInAbsRounded;
        UnaryMinusReg<IS, ipReal32>::act(inAbsRounded, minusInAbsRounded);
        Reg zero;
        AssignReg<IS, ipReal32>::act(zero, .0f);
        RegMask inNeg;
        IsLessReg<IS, ipReal32>::act(in, zero, inNeg);
        IfElseReg<IS, ipReal32>::act(inNeg, minusInAbsRounded, inAbsRounded, out);
    }
};


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

#endif // __IPSDKUTIL_INSTRUCTIONSET_ARITHMETIC_DETAIL_COMMON_ROUNDTONEARESTINTEGRALREG_H__