More cleanup; make 'undetermined' the default val for rank, length

src/ngraph/length.hpp

@@ -39,7 +39,7 @@ namespace ngraph
         }
         Length()
             : m_length(0)
-            , m_is_determined(true)
+            , m_is_determined(false)
         {
         }
         bool is_determined() const { return m_is_determined; }

src/ngraph/rank.cpp

@@ -18,7 +18,7 @@
 
 std::ostream& ngraph::operator<<(std::ostream& str, const Rank& rank)
 {
-    if (rank.is_fixed())
+    if (rank.is_determined())
     {
         return (str << size_t(rank));
     }
@@ -30,10 +30,10 @@ std::ostream& ngraph::operator<<(std::ostream& str, const Rank& rank)
 
 bool ngraph::operator==(const Rank& r1, const Rank& r2)
 {
-    return (r1.is_fixed() && r2.is_fixed() && size_t(r1) == size_t(r2));
+    return (r1.is_determined() && r2.is_determined() && size_t(r1) == size_t(r2));
 }
 
 bool ngraph::operator!=(const Rank& r1, const Rank& r2)
 {
-    return (r1.is_fixed() && r2.is_fixed() && size_t(r1) != size_t(r2));
+    return (r1.is_determined() && r2.is_determined() && size_t(r1) != size_t(r2));
 }

src/ngraph/rank.hpp

@@ -29,24 +29,24 @@ namespace ngraph
     public:
         Rank(size_t rank)
             : m_rank(rank)
-            , m_fixed(true)
+            , m_is_determined(true)
         {
         }
         Rank(const Undetermined&)
             : m_rank(0)
-            , m_fixed(false)
+            , m_is_determined(false)
         {
         }
         Rank()
             : m_rank(0)
-            , m_fixed(true)
+            , m_is_determined(false)
         {
         }
-        bool is_fixed() const { return m_fixed; }
+        bool is_determined() const { return m_is_determined; }
         explicit operator size_t() const { return m_rank; }
     private:
         size_t m_rank;
-        bool m_fixed;
+        bool m_is_determined;
     };
 
     std::ostream& operator<<(std::ostream& str, const Rank& rank);