Greater than and less than Code

Brian_B

I'm trying to make a descion if the value of a variable is between 1 and 8. I've tried a couple differnt ways but I can't get it to work ,here is one sample

code.......
IF variable1 =<1 & =>8
do somthing
ELSE
do somthing differnt

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Thank's Brian



·"Imagination is more important than knowledge..." ·· Albert Einstein

www.PropelX.com

Phil Pilgrim (PhiPi)

You need: IF variable =< 1 AND variable => 8

-Phil

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'Still some PropSTICK Kit bare PCBs left!

Erik Friesen

I think you have it backward. Here is a couple of options

if variable>0 and variable<9
  doit
else 
  dontdoit

or

case variable
  1..8:
    doit
  other:
   dontdoit

I have just lately started using case and find it very handy for some things.

Paul Baker

how about this bit of code:

if (variable - 1) >> 3
  code for variable not between 1 and 8
else
  code for variable between 1 and 8

This is mathmatical form of the logical expression, a result of 0 (FALSE) indicates the variable is between 1 and 8. Don't know which form is faster.


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Paul Baker
Propeller Applications Engineer

Parallax, Inc.

Post Edited (Paul Baker (Parallax)) : 9/1/2008 9:44:52 PM GMT

Brian_B

Thanks' Guys,
I used Phils version just to get it done ,but I plan on checking into the other ones

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Thank's Brian



·"Imagination is more important than knowledge..." ·· Albert Einstein

www.PropelX.com