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Microsoft Specific

Performs the first intermediate step in the Newton-Raphson iteration to refine the reciprocal square root approximation produced by _m_pfsqrt intrinsic function.

__m64 _m_pfrsqit1( __m64 m1, __m64 m2 );

The _m_pfrsqit1 function returns a 64-bit MMX value. There is no error return.

Header: mm3dnow.h

END Microsoft Specific