From: admin@nospicedham.127.0.0.1   
      
   On Sun, 16 May 2021 21:43:10 +0000   
   Robert Prins  wrote:   
      
   []   
   >   
   > Anyway, this is the original TP3 RTL code, which uses repeated subtractions,   
   as   
   > disassembled by Hex-Rays' IDA Pro   
      
   I guess on the original PCs 8088 the subtractions *were* faster?   
      
      
   > I've done a check, and found that a multiply of eax by 0x1999_999a works over   
   > the full 16 bit range to divide by 10 without requiring additional shifts. Of   
   > course it needs a back-multiply and subtraction to actually get the digit.   
   > However, even the above code using a divide will quite likely be   
   (significantly)   
   > faster than the multiple subtraction loops in the original RTL. (And having   
   > mentioned multiplying eax, it should be clear that I don't really care about   
   > keeping the RTL compatible with the 8086/286, and given that replacing   
   > Int21h/AX=2C with "RDTSC" is also an option...)   
   >   
   []   
      
   --   
   Bah, and indeed Humbug.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)