_m_pfnacc 

Microsoft Specific

Performs packed floating-point, single-precision negative accumulation.

__m64 _m_pfnacc( __m64 m1, __m64 m2 );

Remarks

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

Requirements

Header: mm3dnow.h

END Microsoft Specific

See Also

Reference

3DNow! Intrinsics