diff --git a/include/fc/io/enum_type.hpp b/include/fc/io/enum_type.hpp
index bea0a73..c4bb024 100644
--- a/include/fc/io/enum_type.hpp
+++ b/include/fc/io/enum_type.hpp
@@ -26,16 +26,23 @@ namespace fc
       bool       operator<( EnumType i ) { return value < i; }
       bool       operator>( EnumType i ) { return value < i; }
 
-      friend bool operator==( enum_type e, IntType i )  { return e.value == (EnumType)i; }
-      friend bool operator==( enum_type e, EnumType i ) { return e.value == i;           }
+      bool operator<(const enum_type& e) const { return value < e.value;}
+      bool operator>(const enum_type& e) const { return value > e.value;}
+
+      bool operator<=(const enum_type& e) const { return value <= e.value;}
+      bool operator>=(const enum_type& e) const { return value >= e.value;}
+
+      friend bool operator==( const enum_type& e, IntType i ){ return e.value == (EnumType)i;}
+      friend bool operator==( const enum_type& e, EnumType i ){ return e.value == i;         }
+
+      friend bool operator==( const enum_type& e, const enum_type& i ){ return e.value == i.value;  }
+      friend bool operator==( IntType i, const enum_type& e){ return e.value == (EnumType)i; }
+      friend bool operator==( EnumType i, const enum_type& e ){ return e.value == i;         }
+
+      friend bool operator!=( const enum_type& e, IntType i ){ return e.value != (EnumType)i;}
+      friend bool operator!=( const enum_type& e, EnumType i ){ return e.value != i;         }
+      friend bool operator!=( const enum_type& e, const enum_type& i ){ return e.value != i.value;  }
 
-      friend bool operator==( enum_type e, enum_type i ) { return e.value == i.value;    }
-      friend bool operator==( IntType i, enum_type e)  { return e.value == (EnumType)i; }
-      friend bool operator==( EnumType i, enum_type e ) { return e.value == i;           }
-      
-      friend bool operator!=( enum_type e, IntType i )  { return e.value != (EnumType)i; }
-      friend bool operator!=( enum_type e, EnumType i ) { return e.value != i;           }
-      friend bool operator!=( enum_type e, enum_type i ) { return e.value != i.value;    }
       EnumType value;
   };
 
diff --git a/include/fc/io/raw.hpp b/include/fc/io/raw.hpp
index 7c84cd6..874483d 100644
--- a/include/fc/io/raw.hpp
+++ b/include/fc/io/raw.hpp
@@ -106,7 +106,7 @@ namespace fc {
           v |= uint32_t(uint8_t(b) & 0x7f) << by;
           by += 7;
       } while( uint8_t(b) & 0x80 );
-      vi.value = v;
+      vi.value = static_cast<uint32_t>(v);
     }
 
     template<typename Stream> inline void pack( Stream& s, const char* v ) { pack( s, fc::string(v) ); }
@@ -153,7 +153,7 @@ namespace fc {
 
     // bool
     template<typename Stream> inline void pack( Stream& s, const bool& v ) { pack( s, uint8_t(v) );             }
-    template<typename Stream> inline void unpack( Stream& s, bool& v )     { uint8_t b; unpack( s, b ); v=b;    }
+    template<typename Stream> inline void unpack( Stream& s, bool& v )     { uint8_t b; unpack( s, b ); v=(b!=0);    }
 
     namespace detail {
     
diff --git a/include/fc/time.hpp b/include/fc/time.hpp
index dd28bfc..c5ae58a 100644
--- a/include/fc/time.hpp
+++ b/include/fc/time.hpp
@@ -3,6 +3,11 @@
 #include <fc/string.hpp>
 #include <fc/optional.hpp>
 
+#ifdef _MSC_VER
+  #pragma warning (push)
+  #pragma warning (disable : 4244)
+#endif //// _MSC_VER
+
 namespace fc {
   class microseconds { 
     public:
@@ -87,3 +92,7 @@ namespace fc {
 
   typedef fc::optional<time_point> otime_point;
 }
+
+#ifdef _MSC_VER
+  #pragma warning (pop)
+#endif /// #ifdef _MSC_VER
diff --git a/include/fc/uint128.hpp b/include/fc/uint128.hpp
index 2d84c4f..aab14f2 100644
--- a/include/fc/uint128.hpp
+++ b/include/fc/uint128.hpp
@@ -2,6 +2,11 @@
 #include <stdint.h>
 #include <string>
 
+#ifdef _MSC_VER
+  #pragma warning (push)
+  #pragma warning (disable : 4244)
+#endif //// _MSC_VER
+
 namespace fc 
 {
   class bigint;
@@ -110,3 +115,7 @@ namespace std
        }
     };
 }
+
+#ifdef _MSC_VER
+  #pragma warning (pop)
+#endif ///_MSC_VER
diff --git a/include/fc/utility.hpp b/include/fc/utility.hpp
index 0c6c77e..098d9d0 100644
--- a/include/fc/utility.hpp
+++ b/include/fc/utility.hpp
@@ -59,3 +59,7 @@ namespace fc {
     a = fc::move(b);
     b = fc::move(tmp);
   }
+
+#define LLCONST(constant)   static_cast<int64_t>(constant##ll)
+#define ULLCONST(constant)  static_cast<uint64_t>(constant##ull)
+