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_SmulAddHi_SW_SQ

  • Article

An ARM DSP-enhanced, signed integer multiply-accumulate operation that first performs a multiply on two 16-bit source operands from the top half of register Rm and the top half of Rs. This is followed with a 64 bit accumulate with the 32-bit registers RdLo and RdHi.

__int64 _SmulAddHi_SW_SQ(
  __int64 Arg1, 
  int Arg2, 
  int Arg3
);

Parameters

  • Arg1
    Pointers to a 64-bit accumulate that contains RdHi and RdLo.
  • Arg2
    [in] The contents of Rm, the first term in the product.
  • Arg3
    [in] The contents of Rs, the second term in the product.

Return Values

The long integer result of the multiplication and accumulation.

Remarks

The compiler translates this instruction into the smlaltt assembly instruction.

Requirements

OS Versions: Windows CE .NET 4.0 and later.
Header: Armintr.h.

See Also

ARM DSP-Enhanced Intrinsic Functions | _SmulAddLo_SW_SQ | _SmulAddHiLo_SW_SQ | _SmulAddLoHi_SW_SQ

 Last updated on Thursday, April 08, 2004

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