diff --git a/src/de/inetsoftware/jwebassembly/binary/InstructionOpcodes.java b/src/de/inetsoftware/jwebassembly/binary/InstructionOpcodes.java
index a32d073..23c3888 100644
--- a/src/de/inetsoftware/jwebassembly/binary/InstructionOpcodes.java
+++ b/src/de/inetsoftware/jwebassembly/binary/InstructionOpcodes.java
@@ -1,50 +1,56 @@
-/*
- * Copyright 2017 Volker Berlin (i-net software)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package de.inetsoftware.jwebassembly.binary;
-
-/**
- * Instruction opcodes of the binary WebAssembly format.
- * 
- * @author Volker Berlin
- *
- */
-interface InstructionOpcodes {
-
-    // === Control flow operators ====
-
-    static final int BLOCK     = 0x02;
-
-    static final int LOOP      = 0x03;
-
-    static final int IF        = 0x04;
-
-    static final int ELSE      = 0x05;
-
-    static final int END       = 0x0B;
-
-    static final int RETURN    = 0x0F;
-
-    // === Variable access ===========
-
-    static final int GET_LOCAL = 0x20;
-
-    static final int SET_LOCAL = 0x21;
-
-    static final int I32_CONST = 0x41;
-
-    static final int I32_ADD   = 0x6A;
-
-}
+/*
+ * Copyright 2017 Volker Berlin (i-net software)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.inetsoftware.jwebassembly.binary;
+
+/**
+ * Instruction opcodes of the binary WebAssembly format.
+ * 
+ * @author Volker Berlin
+ *
+ */
+interface InstructionOpcodes {
+
+    // === Control flow operators ====
+
+    static final int BLOCK     = 0x02;
+
+    static final int LOOP      = 0x03;
+
+    static final int IF        = 0x04;
+
+    static final int ELSE      = 0x05;
+
+    static final int END       = 0x0B;
+
+    static final int RETURN    = 0x0F;
+
+    // === Variable access ===========
+
+    static final int GET_LOCAL = 0x20;
+
+    static final int SET_LOCAL = 0x21;
+
+    static final int I32_CONST = 0x41;
+
+    static final int I64_CONST = 0x42;
+
+    static final int F32_CONST = 0x43;
+
+    static final int F64_CONST = 0x44;
+
+    static final int I32_ADD   = 0x6A;
+
+}