Performs the second and final step in the Newton-Raphson iteration to refine the reciprocal or reciprocal square root approximation produced by the _m_pfrcp or _m_pfsqrt intrinsic functions, respectively.
__m64 _m_pfrcpit2( __m64 m1, __m64 m2 );
The _m_pfrcpit2 function returns a 64-bit MMX value. There is no error return.
END Microsoft Specific