Changeset 2495:e4f8367beb41 in lemon0.x for lemon
 Timestamp:
 10/13/07 10:48:07 (12 years ago)
 Branch:
 default
 Phase:
 public
 Convert:
 svn:c9d7d8f590d60310b91f818b3a526b0e/lemon/trunk@3334
 File:

 1 edited
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lemon/lp_base.h
r2435 r2495 35 35 ///\ingroup lp_group 36 36 namespace lemon { 37 38 /// Function to decide whether a floating point value is finite or not. 39 40 /// Retruns true if the argument is not infinity, minus infinity or NaN. 41 /// It does the same as the isfinite() function defined by C99. 42 template <typename T> 43 bool isFinite(T value) 44 { 45 typedef std::numeric_limits<T> Lim; 46 if (Lim::has_infinity && (value == Lim::infinity()  value == 47 Lim::infinity())  48 (Lim::has_quiet_NaN  Lim::has_signaling_NaN) && value != value) 49 { 50 return false; 51 } 52 return true; 53 } 37 54 38 55 ///Common base class for LP solvers … … 458 475 ///Is the constraint lower bounded? 459 476 bool lowerBounded() const { 460 using namespace std; 461 return finite(_lb); 477 return isFinite(_lb); 462 478 } 463 479 ///Is the constraint upper bounded? 464 480 bool upperBounded() const { 465 using namespace std; 466 return finite(_ub); 481 return isFinite(_ub); 467 482 } 468 483
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