Index: lemon/lp_base.h
===================================================================
--- lemon/lp_base.h	(revision 471)
+++ lemon/lp_base.h	(revision 487)
@@ -598,9 +598,9 @@
       ///Is the constraint lower bounded?
       bool lowerBounded() const {
-        return _lb != -INF && !isnan(_lb);
+        return _lb != -INF && !isNaN(_lb);
       }
       ///Is the constraint upper bounded?
       bool upperBounded() const {
-        return _ub != INF && !isnan(_ub);
+        return _ub != INF && !isNaN(_ub);
       }
 
@@ -1667,5 +1667,5 @@
                                    const LpBase::Constr &c) {
     LpBase::Constr tmp(c);
-    LEMON_ASSERT(isnan(tmp.lowerBound()), "Wrong LP constraint");
+    LEMON_ASSERT(isNaN(tmp.lowerBound()), "Wrong LP constraint");
     tmp.lowerBound()=n;
     return tmp;
@@ -1679,5 +1679,5 @@
   {
     LpBase::Constr tmp(c);
-    LEMON_ASSERT(isnan(tmp.upperBound()), "Wrong LP constraint");
+    LEMON_ASSERT(isNaN(tmp.upperBound()), "Wrong LP constraint");
     tmp.upperBound()=n;
     return tmp;
@@ -1691,5 +1691,5 @@
                                    const LpBase::Constr &c) {
     LpBase::Constr tmp(c);
-    LEMON_ASSERT(isnan(tmp.upperBound()), "Wrong LP constraint");
+    LEMON_ASSERT(isNaN(tmp.upperBound()), "Wrong LP constraint");
     tmp.upperBound()=n;
     return tmp;
@@ -1703,5 +1703,5 @@
   {
     LpBase::Constr tmp(c);
-    LEMON_ASSERT(isnan(tmp.lowerBound()), "Wrong LP constraint");
+    LEMON_ASSERT(isNaN(tmp.lowerBound()), "Wrong LP constraint");
     tmp.lowerBound()=n;
     return tmp;
Index: lemon/math.h
===================================================================
--- lemon/math.h	(revision 470)
+++ lemon/math.h	(revision 487)
@@ -61,5 +61,5 @@
   ///Is should be equivalent with std::isnan(), but it is not
   ///provided by all compilers.
-  inline bool isnan(double v)
+  inline bool isNaN(double v)
     {
       return v!=v;