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  2. RPG400-L
  3. November 2005

Re: reverse sign

Tony,

if however, you always want to flip the sign, so that negatives become
> positives, and positives become negatives, multiply by -1
>

It is faster to do addition / subtraction then multiplication, so:

x = 0 - x;

is faster to execute. On an I/O bound program, that is like stepping on a
chair to get closer to the moon (as Barbara Morris would say), but there is
no real reason to use a multiply for this operation.

Doug

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