CGAL users discussion list

[Sanket Agarwal <>]

HI Guys,

I am trying to use the Modular Arithmetic functionalities of the CGAL package. Right now I am trying to familiarise myself with the code structure. I am trying to compile/run the following code snippet:

CGAL::Residue res(10);        // Initialising the object res of residue class with the int constructor.

I am being bumped up with the following error:
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terminate called after throwing an instance of 'CGAL::Assertion_exception'
  what():  CGAL ERROR: assertion violation!
Expr: FPU_get_cw() == CGAL_FE_TONEAREST
File: /usr/local/include/CGAL/Modular_arithmetic/Residue_type.h
Line: 110
Aborted
-----------------------------------------------------------------------------------------------------

Residue_type.h:
-----------------------------------------------------------------------------------------------------
106.   static inline 
107.    double RES_round (double a){
108.     // call CGAL::Protect_FPU_rounding<true> pfr(CGAL_FE_TONEAREST)
109.      // before using modular arithmetic 
110.      CGAL_assertion(FPU_get_cw() == CGAL_FE_TONEAREST);
111.      return ( (a + CST_CUT)  - CST_CUT);      
    }
-----------------------------------------------------------------------------------------------------

Any pointers as to how I can correct this error ?