CGAL users discussion list

[Jens Seidel <>]

On Wed, Feb 17, 2010 at 12:14:11PM +0100, Edoardo Milotti wrote:
> I am using the Intel compiler on Mac OS X and cgal 3.5.0 compiled with g++ 
> 4.4 and the macports makefile. Since icc does not have the -frounding-math 
> option, the linked program returns an error (the internal rounding-math 
> test fails). 
> I found out that the internal test can be disabled simply changing lines 
> 76-77 in the Interval_nt.h header file to 
> 
> #if !defined(CGAL_DISABLE_ROUNDING_MATH_CHECK) && defined(__INTEL_COMPILER)
> 
> In the original file the internal test is disabled only on linux systems, 
> while in this way it is always disabled for the Intel compiler. With this 
> fix my program runs, however I wonder whether this is correct, and if it 
> is, shouldn't it be included in future versions of CGAL? 

I have to define CGAL_DISABLE_ROUNDING_MATH_CHECK also on a Linux box using
-frounding-math, namely if I want to start the program via valgrind. It is
not sufficient to define -frounding-math in all cases :-((

Jens