STYLE: use constexpr for pTraits rank

src/OpenFOAM/primitives/Barycentric/Barycentric.H

@@ -63,7 +63,7 @@ public:
     // Member constants
 
         //- Rank of Barycentric is 1
-        static const direction rank = 1;
+        static constexpr direction rank = 1;
 
 
     //- Component labeling enumeration

src/OpenFOAM/primitives/Barycentric2D/Barycentric2D.H

@@ -63,7 +63,7 @@ public:
     // Member constants
 
         //- Rank of Barycentric2D is 1
-        static const direction rank = 1;
+        static constexpr direction rank = 1;
 
 
     //- Component labeling enumeration

src/OpenFOAM/primitives/Scalar/Scalar.H

@@ -59,13 +59,13 @@ public:
     // Member constants
 
         //- Dimensionality of space
-        static const direction dim = 3;
+        static constexpr direction dim = 3;
 
         //- Rank of Scalar is 0
-        static const direction rank = 0;
+        static constexpr direction rank = 0;
 
         //- Number of components in Scalar is 1
-        static const direction nComponents = 1;
+        static constexpr direction nComponents = 1;
 
 
     // Static data members

src/OpenFOAM/primitives/bools/bool/bool.H

@@ -77,13 +77,13 @@ public:
     // Member constants
 
         //- Dimensionality of space
-        static const direction dim = 3;
+        static constexpr direction dim = 3;
 
         //- Rank of bool is 0
-        static const direction rank = 0;
+        static constexpr direction rank = 0;
 
         //- Number of components in bool is 1
-        static const direction nComponents = 1;
+        static constexpr direction nComponents = 1;
 
 
     // Static data members

src/OpenFOAM/primitives/ints/int32/int32.H

@@ -142,13 +142,13 @@ public:
     // Member constants
 
         //- Dimensionality of space
-        static const direction dim = 3;
+        static constexpr direction dim = 3;
 
         //- Rank of int32_t is 0
-        static const direction rank = 0;
+        static constexpr direction rank = 0;
 
         //- Number of components in int32_t is 1
-        static const direction nComponents = 1;
+        static constexpr direction nComponents = 1;
 
 
     // Static data members

src/OpenFOAM/primitives/ints/int64/int64.H

@@ -143,13 +143,13 @@ public:
     // Member constants
 
         //- Dimensionality of space
-        static const direction dim = 3;
+        static constexpr direction dim = 3;
 
         //- Rank of int64_t is 0
-        static const direction rank = 0;
+        static constexpr direction rank = 0;
 
         //- Number of components in int64_t is 1
-        static const direction nComponents = 1;
+        static constexpr direction nComponents = 1;
 
 
     // Static data members

src/OpenFOAM/primitives/ints/uint32/uint32.H

@@ -133,13 +133,13 @@ public:
     // Member constants
 
         //- Dimensionality of space
-        static const direction dim = 3;
+        static constexpr direction dim = 3;
 
         //- Rank of uint32_t is 0
-        static const direction rank = 0;
+        static constexpr direction rank = 0;
 
         //- Number of components in uint32_t is 1
-        static const direction nComponents = 1;
+        static constexpr direction nComponents = 1;
 
 
     // Static data members

src/OpenFOAM/primitives/ints/uint64/uint64.H

@@ -141,13 +141,13 @@ public:
     // Member constants
 
         //- Dimensionality of space
-        static const direction dim = 3;
+        static constexpr direction dim = 3;
 
         //- Rank of uint64_t is 0
-        static const direction rank = 0;
+        static constexpr direction rank = 0;
 
         //- Number of components in uint64_t is 1
-        static const direction nComponents = 1;
+        static constexpr direction nComponents = 1;
 
 
     // Static data members

src/OpenFOAM/primitives/quaternion/quaternion.H

@@ -110,7 +110,7 @@ public:
     // Member constants
 
         //- Rank of quaternion is 1
-        static const direction rank = 1;
+        static constexpr direction rank = 1;
 
 
     // Static data members