[ODE] Wrong brackets in definition of dSqrt in common.h ?

[Rodrigo Hernandez]

That's a function-call style cast, acording to Wikipedia 
(http://en.wikipedia.org/wiki/Type_conversion) its the C++ way of doing 
type casting (though C style is still supported).

I am curious as to what code does the preprocessor generates for dSqrt 
in AMD 64.
 
Peter Onion wrote:

>I have not got to the bottom of this yet but.....
>
>I'm just building some existing working ODE code on my new AMD 64 box
>and I got this error from gcc.....
>
>Drawers2.c: In function ‘timeout’:
>Drawers2.c:232: error: syntax error before ‘float’
>
>line 232:
>	distance = dDISTANCE(posn3,force3);
>
>
>I think the problem is coming from the declaration of dSqrt used in
>dDistance.
>
>dSqrt in defined in common.h as 
>#define dSqrt(x) ((float)sqrtf(float(x)))       
>which looks odd as I don't think there is not function called "float".
>I think it should be 
>#define dSqrt(x) ((float)sqrtf((float)(x)))     
>which atleast compiles in the 64 bit box.
>I'm not sure why it ever compiled in the original form!
>
>The gcc on this box is 
>gcc version 4.0.2 20050901 (prerelease) (SUSE Linux)
>
>Peter
>
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