anchor.diff:          ADC     RDX,0
           MOV     [RDI],RAX
           MOV     RBX,RDX
  -        LEA     ESI,[ESI + DLimbSize]
  -        LEA     EDI,[EDI + DLimbSize]
  +        LEA     RSI,[RSI + DLimbSize]
  +        LEA     RDI,[RDI + DLimbSize]
           DEC     R11D
           JNE     @FinalLoop
   
  
positive.code: { TODO: InternalMultiply (basecase): use MMX instead of plain registers. Also remove trailing loop, make 4
          completely separate loop+trail parts. }
  { TODO: InternalMultiply: consider algorithm by Malenkov et al. In short, this adds columns first, instead of rows. }
  
  interface
  
  
negative.code:         CMP     R11D,0
          JE      @SkipFinalLoop
  
          .ALIGN  16
  
  @FinalLoop:
  
          MOV     RAX,[RSI]
  