error: 'finite' was not declared in this scope

Chris B · **Joined:** Wed May 21, 2008 8:10 am **Posts:** 2

Hi everyone,
I'm really eager to try this neat library out, but I just can't get the engine to compile.

I'm using Codeblocks + MinGW under WinXP and after opening the workspace in Build/Codeblocks and pressing "compile" I get the following error and a warning in b2math.h in line 62:

error: 'finite' was not declared in this scope
warning: unused variable 'fninite'

Pls help!

Chris B · **Joined:** Wed May 21, 2008 8:10 am **Posts:** 2

I solved the problem.
To recapitulate: Common/b2math.h gave an error, so here's what I did:

1. I edited out the line:

Code:

#include <cmath>

2. I added the line:

Code:

#include <math.h>

3. I edited the line:

Code:

return finite(x) != 0;

to:

Code:

return isfinite(x) != 0;

As far as I can tell the function isfinite() seems to work just like finite() / _finite():
http://www.java2s.com/Tutorial/C/0340__ ... finite.htm
(returns non-zero if finite, 0 otherwise.)

Still don't know why CodeBlocks+MinGW dosn't like finite(), but anyway..

caxaria · **Joined:** Sun Jan 18, 2009 5:39 am **Posts:** 4

Thanks mate, I was having this same issue with box2d 2.0.1, on a Mac with XCode.

If you're ever in Portugal, I'll buy you a beer.

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error: 'finite' was not declared in this scope

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