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_SmulAddLo_SW_SQ

  • Article

9/7/2007

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

Syntax

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

Parameters

  • Arg1
    A pointer to a 64-bit variable used to accumulate the contents of 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 result of multiplication and accumulation.

Remarks

The compiler translates this instruction into the smlalbb assembly instruction.

Requirements

Routine Required header Architecture

_SmulAddLo_SW_SQ

<armintr.h>

ARM10, ARM-DSP

See Also

Reference

ARM DSP-enhanced Intrinsic Functions
_SmulAddHi_SW_SQ
_SmulAddHiLo_SW_SQ
_SmulAddLoHi_SW_SQ