predicates.h

// This is a DOLFIN header file for predicates.cpp which provides
//
//   Routines for Arbitrary Precision Floating-point Arithmetic
//   and Fast Robust Geometric Predicates
//
// by
//
//   Jonathan Richard Shewchuk
//
// Code is placed in the public domain.
 
#ifndef __PREDICATES_H
#define __PREDICATES_H
 
namespace dolfin
{
 
  class Point;

  void exactinit();

  double orient1d(double a, double b, double x);

  double _orient2d(const double* a, const double* b, const double* c);

  double orient2d(const Point& a, const Point& b, const Point& c);

  double _orient3d(const double* a, const double* b, const double* c, const double* d);

  double orient3d(const Point& a, const Point& b, const Point& c, const Point& d);

 
  class PredicateInitialization
  {
  public:
 
    PredicateInitialization()
    {
      exactinit();
    }
 
  };
 
}
 
#endif