Programming Problem - Help

[Dusen]

I'm doing somethere where a selected value HAS to be an integer power of 2. Anyone know a "clean" way I could round a desired value to the nearest power of 2?

I.e. input is 37 -> rounded to 32

input is 84 - > rounded to 64

input is 99 -> rounded to 128


Just a general algo is fine, i can adapt it to PHP.

[blazin]

think in binary

[jawanda]

Alright, this might not be the cleanest approach, by try something like this.


A=2

While A is less than Input

A = A*2

Wend

Edit: Input = A/2

[Ash@phpFX]

Originally posted by blazin
think in binary

[Dusen]

Originally posted by jawanda
Alright, this might not be the cleanest approach, by try something like this.


A=2

While A is less than Input

A = A*2

Wend

Edit: Input = A/2

This is currently what I'm doing, except after that I determine the distance between the value before and after the > value, then get the distance and choose it.

blazin: Thanks, I will :D