diff --git a/src/internalJNI.jsh b/src/internalJNI.jsh
index 279a33e..05e841a 100644
--- a/src/internalJNI.jsh
+++ b/src/internalJNI.jsh
@@ -24,5 +24,11 @@
 	'java.lang.Class' : {
 		'method registerNatives()V' : java_lang_Object_registerNatives,
 		'method getPrimitiveClass(Ljava/lang/String;)Ljava/lang/Class;' : java_lang_Class_getPrimitiveClass
+	},
+	'java.lang.Float' : {
+		'method floatToRawIntBits(F)I' : java_lang_Float_floatToRawIntBits
+	},
+	'java.lang.Double' : {
+		'method doubleToRawLongBits(D)J' : java_lang_Double_doubleToRawLongBits
 	}
  }
\ No newline at end of file
diff --git a/src/javaNativeInterface.js b/src/javaNativeInterface.js
index 0a12422..73b44ed 100644
--- a/src/javaNativeInterface.js
+++ b/src/javaNativeInterface.js
@@ -34,4 +34,19 @@ function java_lang_System_currentTimeMillis(){
 //java.lang.Class getPrimitiveClass(Ljava/lang/String;)Ljava/lang/Class;
 function java_lang_Class_getPrimitiveClass (type) {
 	return this.jvm['primitive_' + javaString2JS(type)];
+}
+
+//java.lang.Float floatToRawIntBits(F)I
+function java_lang_Float_floatToRawIntBits(f){
+	var x = new ArrayBuffer(32);
+	new Float32Array(x,0)[0] = f;
+	return new Int32Array(x,0)[0];
+}
+
+//java.lang.Double doubleToRawLongBits(D)J
+	function java_lang_Double_doubleToRawLongBits(d){
+	var x = new ArrayBuffer(32);
+	new Float64Array(x,0)[0] = d;
+	var y = new Int32Array(x,0);
+	return new math.Long(y[0],y[1]);
 }
\ No newline at end of file