正在阅读：SSE指令介绍及其C、C++应用SSE指令介绍及其C、C++应用

class CTimer

{

public:

       __forceinline CTimer( void )

       {

              QueryPerformanceFrequency( &m_Frequency );

              QueryPerformanceCounter( &m_StartCount );

       }

       __forceinline void Reset( void )

       {

              QueryPerformanceCounter( &m_StartCount );

       }

       __forceinline double End( void )

       {

              static __int64 nCurCount;

              QueryPerformanceCounter( (PLARGE_INTEGER)&nCurCount );

              return double( nCurCount * ( *(__int64*)&m_StartCount ) ) / double( *(__int64*)&m_Frequency );

       }

private:

       LARGE_INTEGER m_Frequency;

       LARGE_INTEGER m_StartCount;

};

void ScaleValue1( float *pArray, DWORD dwCount, float fScale )

{