--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/core/MathNodes.java	Tue Jan 07 18:53:04 2014 +0100
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
+ * code is released under a tri EPL/GPL/LGPL license. You can use it,
+ * redistribute it and/or modify it under the terms of the:
+ *
+ * Eclipse Public License version 1.0
+ * GNU General Public License version 2
+ * GNU Lesser General Public License version 2.1
+ */
+package com.oracle.truffle.ruby.nodes.core;
+
+import java.math.*;
+
+import com.oracle.truffle.api.*;
+import com.oracle.truffle.api.dsl.*;
+import com.oracle.truffle.ruby.runtime.*;
+
+@CoreClass(name = "Math")
+public abstract class MathNodes {
+
+    @CoreMethod(names = "sqrt", isModuleMethod = true, needsSelf = false, minArgs = 1, maxArgs = 1)
+    public abstract static class SqrtNode extends CoreMethodNode {
+
+        public SqrtNode(RubyContext context, SourceSection sourceSection) {
+            super(context, sourceSection);
+        }
+
+        public SqrtNode(SqrtNode prev) {
+            super(prev);
+        }
+
+        @Specialization
+        public double sqrt(int a) {
+            return Math.sqrt(a);
+        }
+
+        @Specialization
+        public double sqrt(BigInteger a) {
+            return Math.sqrt(a.doubleValue());
+        }
+
+        @Specialization
+        public double sqrt(double a) {
+            return Math.sqrt(a);
+        }
+
+    }
+
+    @CoreMethod(names = "exp", isModuleMethod = true, needsSelf = false, minArgs = 1, maxArgs = 1)
+    public abstract static class ExpNode extends CoreMethodNode {
+
+        public ExpNode(RubyContext context, SourceSection sourceSection) {
+            super(context, sourceSection);
+        }
+
+        public ExpNode(ExpNode prev) {
+            super(prev);
+        }
+
+        @Specialization
+        public double exp(int a) {
+            return Math.exp(a);
+        }
+
+        @Specialization
+        public double exp(BigInteger a) {
+            return Math.exp(a.doubleValue());
+        }
+
+        @Specialization
+        public double exp(double a) {
+            return Math.exp(a);
+        }
+
+    }
+
+}