NormalRandom.h

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// NormalRandom.h:
// ------------
//

#ifndef __IPSDKUTIL_INSTRUCTIONSET_NORMALRANDOM_H__
#define __IPSDKUTIL_INSTRUCTIONSET_NORMALRANDOM_H__

#pragma warning (push)
#pragma warning (disable:4251)

#include <IPSDKUtil/IPSDKUtilExports.h>
#include <IPSDKUtil/InstructionSet/detail/NormalRandomPack.h>
#include <IPSDKUtil/InstructionSet/detail/NormalRandomReg.h>

#include <IPSDKUtil/InstructionSet/detail/BasePackDecl.h>
#include <IPSDKUtil/InstructionSet/UniformRandomLCG.h>
#include <IPSDKUtil/Tools/ForceInline.h>

namespace ipsdk {
namespace simd {



template <eInstructionSet::domain instructionSet, eInstructionSet::domain instructionSetFma, typename T>
class NormalRandom {
public:
    NormalRandom(ipsdk::ipReal32 mean, ipsdk::ipReal32 sigma);

    NormalRandom(ipsdk::ipReal32 mean, ipsdk::ipReal32 sigma, ipUInt32 nSeed);

    IPSDK_FORCEINLINE BasePack<IS2PackType<instructionSet>::_packType, T> operator()()
    {
        _bGenerate = !_bGenerate;
        if(_bGenerate) {
            BasePack<IS2PackType<instructionSet>::_packType, T> randomPack;
            detail::NormalRandomPack<instructionSet, instructionSetFma, T>::act(
                _rMean,
                _rSigma,
                _uniformRandomLCG(),
                _uniformRandomLCG(),
                randomPack, _savedRandomPack);
            return randomPack;
        }
        else
            return _savedRandomPack;
    }

protected:
    typedef typename RegType<instructionSet, ipReal32>::Type    RegFloat;

    UniformRandomLCG<instructionSet, ipReal32>              _uniformRandomLCG;
    RegFloat                                                _rMean;
    RegFloat                                                _rSigma;
    bool                                                    _bGenerate;
    BasePack<IS2PackType<instructionSet>::_packType, T>     _savedRandomPack;
};


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

#pragma warning (pop)

#endif // __IPSDKUTIL_INSTRUCTIONSET_NORMALRANDOM_H__