SyntaxBomb - Indie Coders

Hi,

Im wondering what the benifits of creating an Array with a pointer TABLE, opposed to doing the math on the fly.

Ie in my project im using SHORTS. the most common sum im doing is multiplying or dividing by 256 for the MSB of the Word.

What do most people do?

1. Do the math on the fly

2. ( ( shl or shr ) by 8 ) for *256 or Divide

3. Create an Arrayed pointer to lock up the ( Division or Multiplication )

or anyother ways that i cant think off right now.

I looking for the quickest way of doing the Division or Multiplication on the Fly.

Kind Regards Baggey

bitwise shr / shl will always be the fastest

but do some checks to see too - then use the fastest (the compiler might use some strange calls that are faster?)

Today since computer processors are so fast, any speed increase from bit shifts will be so tiny as it won't matter. The real slowdown issue will be the way you handle your graphics.

Quote from: markcwm on September 12, 2021, 15:14:52
Today since computer processors are so fast, any speed increase from bit shifts will be so tiny as it won't matter. The real slowdown issue will be the way you handle your graphics.

The fastest way for that is "GLMax2DDriver" with BlitzMax 

Baggey