bounds.h

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#ifndef IFOPT_INCLUDE_OPT_BOUNDS_H_
#define IFOPT_INCLUDE_OPT_BOUNDS_H_
 
namespace ifopt {
 
struct Bounds {
  Bounds(double lower = 0.0, double upper = 0.0)
  {
    lower_ = lower;
    upper_ = upper;
  }
 
  double lower_;
  double upper_;
 
  void operator+=(double scalar)
  {
    lower_ += scalar;
    upper_ += scalar;
  }
 
  void operator-=(double scalar)
  {
    lower_ -= scalar;
    upper_ -= scalar;
  }
};
 
// settings this as signals infinity for IPOPT/SNOPT solvers
static const double inf = 1.0e20;
 
static const Bounds NoBound          = Bounds(-inf, +inf);
static const Bounds BoundZero        = Bounds(0.0, 0.0);
static const Bounds BoundGreaterZero = Bounds(0.0, +inf);
static const Bounds BoundSmallerZero = Bounds(-inf, 0.0);
 
}  // namespace ifopt
 
#endif /* IFOPT_INCLUDE_OPT_BOUNDS_H_ */