--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/micro/org/openjdk/bench/java/lang/FloatingDecimal.java	Fri Nov 16 23:39:51 2018 +0100
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.openjdk.bench.java.lang;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OperationsPerInvocation;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.infra.Blackhole;
+
+import java.util.Random;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Tests for sun.misc.FloatingDecimal. Performs floating point number to String conversions.
+ */
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+@State(Scope.Thread)
+public class FloatingDecimal {
+
+    private double[] randomArray, twoDecimalsArray, integerArray;
+    private static final int TESTSIZE = 1000;
+
+    @Setup
+    public void setup() {
+        Random r = new Random(1123);
+        randomArray = new double[TESTSIZE];
+        twoDecimalsArray = new double[TESTSIZE];
+        integerArray = new double[TESTSIZE];
+        for (int i = 0; i < TESTSIZE; i++) {
+            randomArray[i] = r.nextDouble() * 10000.0D;
+            twoDecimalsArray[i] = ((double) (10000 - r.nextInt(20000))) / 100;
+            integerArray[i] = (double) (100 - r.nextInt(200));
+        }
+    }
+
+    /** Tests Double.toString on double values generated from Random.nextDouble() */
+    @Benchmark
+    @OperationsPerInvocation(TESTSIZE)
+    public void randomDoubleToString(Blackhole bh) {
+        for (double d : randomArray) {
+            bh.consume(Double.toString(d));
+        }
+    }
+
+    /** Tests Double.toString on double values that are integers between -100 and 100. */
+    @Benchmark
+    @OperationsPerInvocation(TESTSIZE)
+    public void integerDoubleToString(Blackhole bh) {
+        for (double d : integerArray) {
+            bh.consume(Double.toString(d));
+        }
+    }
+
+    /** Tests Double.toString on double values that are between -100 and 100 and have two decimal digits. */
+    @Benchmark
+    @OperationsPerInvocation(TESTSIZE)
+    public void twoDecimalsDoubleToString(Blackhole bh) {
+        for (double d : twoDecimalsArray) {
+            bh.consume(Double.toString(d));
+        }
+    }
+
+}