Mahmood Naderan wrote:

> Hi,

> In my program, I get these warnnings but I think they are independent of

> mine:

> c:\program files\cgal-3.4-beta1\include\cgal\core\filter.h(180) :

> warning C4756: overflow in constant arithmetic

> c:\program files\cgal-3.4-beta1\include\cgal\core\filter.h(159) :

> warning C4756: overflow in constant arithmetic

>

>

>

> Although they are warnnings and can be ingnored, the first one points to

> this section:

> /// helper function (to avoid warning under some compilers)

> static double getDoubleInfty() {

> static double d = DBL_MAX;

> return 2*d;

> }

>

> this function as it says is to avoid warnnings (!), but according to

> float.h in VC directory, the valuse of DBL_MAX is maximum inself:

> #define DBL_MAX 1.7976931348623158e+308 /* max value */

>

>

>

> So why should we return an overflowed value ?! The second warnning is

> also related to this function.

DBL_MAX is the maximum *finite* value. There is also the infinity,

which is what the funciton is trying to generate.

Maybe you can try to return CGAL::CGALi::infinity instead (from <CGAL/FPU.h>)?

Note that Core is not formally part of CGAL, and lacks active maintenance.

--

Sylvain Pion

INRIA Sophia-Antipolis

Geometrica Project-Team

CGAL,

http://cgal.org/