add cast functions from/to idtype

diff --git a/src/Basics/smIdType.hxx.in b/src/Basics/smIdType.hxx.in
index b97de4a1f73e263fc6a63a76479a38d9b1883c41..75315a5da8e9cf19b453a0454e1dca00bd4b6290 100644 (file)
--- a/src/Basics/smIdType.hxx.in
+++ b/src/Basics/smIdType.hxx.in
@@ -33,4 +33,13 @@ typedef std::int32_t smIdType;
 typedef std::int64_t smIdType;
 #endif
 
+template <class T> inline smIdType ToIdType(T val)
+{
+  return static_cast<smIdType>(val);
+}
+template <class T> inline T FromIdType(smIdType val)
+{
+  return static_cast<T>(val);
+}
+
 #endif //_SMIDTYPE_HXX_