From: "Rafał Maj" <r_maj AT poczta DOT onet DOT pl>
Newsgroups: comp.os.msdos.djgpp
Subject: Odp: twin complement ......
Date: Fri, 18 Aug 2000 01:08:22 +0200
Organization: Academic Computer Center CYFRONET AGH
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Florent <florent AT oih DOT rwth-aachen DOT de> wrote :
> What do you think about this function, I tried it with some values and it
> seems to work.
>
> long int TwinComplement(long int Value) {
>
>  long int Temp;
>  Temp=Value;
>  Value=(~Value)+1;
>  if (Temp<=0xf) Value=Value&0x0000000f;
>  if (Temp<=0xff) Value=Value&0x000000ff;
>  if (Temp<=0xfff) Value=Value&0x00000fff;
>  if (Temp<=0xffff) Value=Value&0x0000ffff;
>  if (Temp<=0xfffff) Value=Value&0x000fffff;
>  if (Temp<=0xffffff) Value=Value&0x00ffffff;
>  if (Temp<=0xfffffff) Value=Value&0x0fffffff;
>
>  return Value;
> }
>

1) This function will work quit slow (if you're going to use it in some loop
for example)
2) Can you tell me what exacly is twin complement ? How this function is
suppose to work ?

Rafal