_SmulAddHi_SW_SQ (Windows Embedded CE 6.0)

1/5/2010

This ARM DSP-enhanced, signed integer multiply-accumulate operation 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.

Syntax

__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

See Also

Reference

ARM DSP-enhanced Intrinsic Functions
_SmulAddLo_SW_SQ
_SmulAddHiLo_SW_SQ
_SmulAddLoHi_SW_SQ