Ticket #199: 03ce6078f568.patch

new file lemon/bits/isnan.h

@@ +1 @@
+/* -*- mode: C++; indent-tabs-mode: nil; -*-
+ *
+ * This file is a part of LEMON, a generic C++ optimization library.
+ *
+ * Copyright (C) 2003-2009
+ * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
+ * (Egervary Research Group on Combinatorial Optimization, EGRES).
+ *
+ * Permission to use, modify and distribute this software is granted
+ * provided that this copyright notice appears in all copies. For
+ * precise terms see the accompanying LICENSE file.
+ *
+ * This software is provided "AS IS" with no warranty of any kind,
+ * express or implied, and with no claim as to its suitability for any
+ * purpose.
+ *
+ */
+
+#ifndef LEMON_BITS_ISNAN_H
+#define LEMON_BITS_ISNAN_H
+
+namespace lemon 
+{
+  inline bool isnan(double v)
+    {
+      return v!=v;
+    }
+}
+
+#endif

lemon/lp_base.h

@@ -30 +30 @@
 
 #include<lemon/core.h>
 #include<lemon/bits/solver_bits.h>
+#include<lemon/bits/isnan.h>
 
 ///\file
 ///\brief The interface of the LP solver interface.
@@ -597 +598 @@
       const Value &upperBound() const { return _ub; }
       ///Is the constraint lower bounded?
       bool lowerBounded() const {
-        return _lb != -INF && !std::isnan(_lb);
+        return _lb != -INF && !isnan(_lb);
       }
       ///Is the constraint upper bounded?
       bool upperBounded() const {
-        return _ub != INF && !std::isnan(_ub);
+        return _ub != INF && !isnan(_ub);
       }
 
     };
@@ -1666 +1667 @@
   inline LpBase::Constr operator<=(const LpBase::Value &n,
                                    const LpBase::Constr &c) {
     LpBase::Constr tmp(c);
-    LEMON_ASSERT(std::isnan(tmp.lowerBound()), "Wrong LP constraint");
+    LEMON_ASSERT(isnan(tmp.lowerBound()), "Wrong LP constraint");
     tmp.lowerBound()=n;
     return tmp;
   }
@@ -1678 +1679 @@
                                    const LpBase::Value &n)
   {
     LpBase::Constr tmp(c);
-    LEMON_ASSERT(std::isnan(tmp.upperBound()), "Wrong LP constraint");
+    LEMON_ASSERT(isnan(tmp.upperBound()), "Wrong LP constraint");
     tmp.upperBound()=n;
     return tmp;
   }
@@ -1690 +1691 @@
   inline LpBase::Constr operator>=(const LpBase::Value &n,
                                    const LpBase::Constr &c) {
     LpBase::Constr tmp(c);
-    LEMON_ASSERT(std::isnan(tmp.upperBound()), "Wrong LP constraint");
+    LEMON_ASSERT(isnan(tmp.upperBound()), "Wrong LP constraint");
     tmp.upperBound()=n;
     return tmp;
   }
@@ -1702 +1703 @@
                                    const LpBase::Value &n)
   {
     LpBase::Constr tmp(c);
-    LEMON_ASSERT(std::isnan(tmp.lowerBound()), "Wrong LP constraint");
+    LEMON_ASSERT(isnan(tmp.lowerBound()), "Wrong LP constraint");
     tmp.lowerBound()=n;
     return tmp;
   }