CGAL users discussion list

[Alexander <>]

Friends, I am installing CGAL in my friend's computer of the same type as
mine. (installing in UBUNTU)
Anyway when I run the following program to check if everything is ok I ran
into following problems:

Code:http://doc.cgal.org/latest/Manual/introduction.html

#include <iostream>
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/convex_hull_2.h>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef K::Point_2 Point_2;
int main()
{
Point_2 points[5] = { Point_2(0,0), Point_2(10,0), Point_2(10,10),
Point_2(6,5), Point_2(4,1) };
Point_2 result[5];
Point_2 *ptr = CGAL::convex_hull_2( points, points+5, result );
std::cout << ptr - result << " points on the convex hull" << std::endl;
return 0;
}

Commands typed in Terminal :g++ TestCgal.cpp -lCGAL -lgmp

Error Displayed: terminate called after throwing an instance of
'CGAL::Assertion_exception'
  what():  CGAL ERROR: assertion violation!
Expr: -CGAL_IA_MUL(-1.1, 10.1) != CGAL_IA_MUL(1.1, 10.1)
File: /usr/include/CGAL/Interval_nt.h
Line: 160
Explanation: Wrong rounding: did you forget the  -frounding-math  option if
you use GCC (or  -fp-model strict  for Intel)?
Aborted (core dumped)

The last time I got this error I read a post saying to change ''i686'' to
"i386" in som file in 32 bit systems or something lik that and that worked
fine in my system.

Can anyone direct me to that post(as i am unable to find that one) or can
anyone tell me how to fix the error 



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