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_SmulAddWHi_SW_SL

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An ARM DSP-enhanced, signed integer multiply-accumulate operation that multiplies Rm with the top 16 bits of Rs then accumulates in Rn. The operation adds the upper 32 bits of the 48-bit product to the 32-bit Rn.

int _SmulAddWHi_SW_SL(
  int Arg1, 
  int Arg2,
  int Arg3
);

Parameters

  • Arg1
    [in] The contents of Rn, the value added to the product of Arg2 and Arg3.
  • 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 integer result of the multiplication and accumulation.

Remarks

The compiler translates this instruction into the smlawt assembly instruction.

Requirements

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

See Also

ARM DSP-Enhanced Intrinsic Functions | _SmulAddWLo_SW_SL

 Last updated on Thursday, April 08, 2004

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