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Calculating the Infinite (in my case: solved)

by rennie moffat · in iTorque 2D · 04/05/2011 (9:12 am) · 6 replies

Hi there,
I am wondering,
I am having a slight issue pop up in some calculations in that I get %variable == inf. I am wondering, if %variable == inf how can I say...

if(%variable == inf)
{
///do this.
}


Or if for what ever reason I can not get a return on the %variable. How can I put in preventive measures to abort the function if that is indeed the case? In other words, how can I say, if this the value is not a real number?







Cheers

rennie moffat's profile picture
Torque Owner rennie moffat
Renman3000

About the author

My thanks to Garage Games and the Garage Games Community combined with owned determination I got one game up, Temple Racer and I am looking to build more interesting, fun games for the mass market of the iOS app store.

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    Torque Owner Ivan Mandzhukov
    Liman3D
    #1
    04/05/2011 (9:35 am)
    This is a good question.
    If a floating point number is greater than the maximal number or smaller than the minimal one,it is infinite for sure.

    For floats the minimal one is FLT_MIN (10^(-37)),the maximal is FLT_MAX(10^37)

    Torque Owner rennie moffat
    Renman3000
    #2
    04/05/2011 (9:43 am)
    So a simple if with those values?


    Will that account for the echo return of %value = inf?

    Torque Owner Ivan Mandzhukov
    Liman3D
    #3
    04/05/2011 (9:44 am) 
    function isInfinite(%var)
{
 // should return 'true' for infinite values
 return (%var <= mPow(10,-37)) || (%var >= mPow(10,37))
}

    May be this should work.

    Torque Owner rennie moffat
    Renman3000
    #4
    04/05/2011 (9:46 am)
    Ok I will give it a try.

    Thanks!





    Infinitism, such an amazing thing.

    Conor O'Kane
    cokane.com
    #5
    04/06/2011 (6:55 am)
    Surely if a number is out of the usable range, you can't test against it because it can't be saved. I just did a test where I multiplied a large variable by itself a few times and echoed it. Eventually the echo turned into "1.#INF" so I guess that's Torque's way of saying infinite.

    Torque Owner rennie moffat
    Renman3000
    #6
    04/06/2011 (7:47 am)
    Hi,
    well the glitch has seemed to cease, or at least been reduced in occurrences. What was causing it, was a parameter would go missing mid function. I just put up a "block", an if this is not true, right before the key calculation. And it went away. Yeh, new techniques everyday.



    Thanks.