CGAL users discussion list

[Stefan Schirra <>]

Jianfei Liu wrote:
> I am reading a simple .off file and traslate it from polyhedron to Nef 
> polyhedron, but failed with an error:Gmpz constructed from non-integer double 
> value.

The error message says it all: 0.256 is not an integer, whereas Gmpz is an 
integer-type. You cannot convert arbitrary floats to this type. Only floats 
representing integral values can be converted.

> I noticed somebody says it is a bug for older CGAL, however it seems still 
> existing for the newest version 3.6.
> OFF
> 4 4 0
>
> 0 0 0.256
> 1 0 0
> 0 1 0
> 0 0 1
>
> 3 0 2 1
> 3 0 1 3 
> 3 0 3 2
> 3 1 2 3
>
> The problem is caused by 0.256 in the above file. 

Multiply your coordinates by 1000 ;-)



--      Stefan