fixed windows build

flow/Platform.cpp

@@ -154,14 +154,6 @@ using std::endl;
 __int64 FiletimeAsInt64 (FILETIME &t){
 	return *(__int64*)&t;
 }
-
-int ctzll( uint64_t value ) {
-    unsigned long count = 0;
-    if( _BitScanForward64( &count, value ) ) {
-        return count;
-    }
-    return 64;
-}
 #endif
 
 #ifdef _WIN32

flow/Platform.h

@@ -524,6 +524,18 @@ bool isLibraryLoaded(const char* lib_path);
 void* loadLibrary(const char* lib_path);
 void* loadFunction(void* lib, const char* func_name);
 
+#ifdef _WIN32
+inline static int ctzll( uint64_t value ) {
+    unsigned long count = 0;
+    if( _BitScanForward64( &count, value ) ) {
+        return count;
+    }
+    return 64;
+}
+#else
+#define ctzll __builtin_ctzll
+#endif
+
 // MSVC not support noexcept yet
 #ifndef __GNUG__
 #ifndef VS14
@@ -565,10 +577,4 @@ EXTERNC void setProfilingEnabled(int enabled);
 #error Clean builds must define NDEBUG, and not define various debug macros
 #endif
 
-#ifdef _WIN32
-int ctzll( uint64_t value );
-#else
-#define ctzll __builtin_ctzll
-#endif
-
 #endif /* FLOW_PLATFORM_H */