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Bug: b2Math.h : b2IsValid(float32 x)

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mkmage

Post subject: Bug: b2Math.h : b2IsValid(float32 x)

Posted: Tue Jul 29, 2008 6:05 pm

Joined: Tue Jul 29, 2008 5:59 pm
Posts: 20

here is the function.

Code:

inline bool b2IsValid(float32 x)
{
#ifdef _MSC_VER
     return _finite(x) != 0;
#else
    if( x == FP_NAN || x == FP_INFINITE ) // my example numbers are 1 and 2 and they make this if statement true;
        return false;
    else
        return true;
    //return finite(x) != 0;

i commented out this and just return true for now and my physics game loads fine. this is not properly checking if the floating point is Not a Number or is Infinite.

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kavaler

Post subject: Re: Bug: b2Math.h : b2IsValid(float32 x)

Posted: Tue Jul 29, 2008 7:36 pm

Joined: Wed Jan 02, 2008 3:19 am
Posts: 67

The values FP_NAN and FP_FINITE are enumerated constants not in the floating point number space. To use them you would compare fpclassify(x) == FP_NAN. What is in the SVN source right now is to use finite(x) for non-microsoft compilers and _finite(x) for microsoft compilers. Perhaps your compiler needs to use some other function?

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mkmage

Post subject: Re: Bug: b2Math.h : b2IsValid(float32 x)

Posted: Thu Jul 31, 2008 3:02 pm

Joined: Tue Jul 29, 2008 5:59 pm
Posts: 20

oh, alright, i will look into that. we are compiling for the iphone.

thx for the help.

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