author | neliasso |
Tue, 01 Oct 2019 11:43:10 +0200 | |
changeset 58421 | 6fc57e391539 |
permissions | -rw-r--r-- |
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// |
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// Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved. |
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// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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// |
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// This code is free software; you can redistribute it and/or modify it |
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// under the terms of the GNU General Public License version 2 only, as |
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// published by the Free Software Foundation. |
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// |
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// This code is distributed in the hope that it will be useful, but WITHOUT |
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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// version 2 for more details (a copy is included in the LICENSE file that |
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// accompanied this code). |
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// |
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// You should have received a copy of the GNU General Public License version |
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// 2 along with this work; if not, write to the Free Software Foundation, |
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// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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// |
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// Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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// or visit www.oracle.com if you need additional information or have any |
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// questions. |
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// |
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// |
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package org.openjdk.bench.java.math; |
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import java.util.Random; |
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import java.util.concurrent.TimeUnit; |
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import org.openjdk.jmh.annotations.*; |
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import org.openjdk.jmh.infra.Blackhole; |
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@OutputTimeUnit(TimeUnit.MILLISECONDS) |
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@State(Scope.Thread) |
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public class FpRoundingBenchmark { |
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@Param({"1024"}) |
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public int TESTSIZE; |
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public double[] DargV1; |
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public double[] Res; |
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public final double[] DspecialVals = { |
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0.0, -0.0, Double.NaN, Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY}; |
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@Setup(Level.Trial) |
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public void BmSetup() { |
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int i = 0; |
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Random r = new Random(1024); |
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DargV1 = new double[TESTSIZE]; |
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Res = new double[TESTSIZE]; |
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for (; i < DspecialVals.length; i++) { |
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DargV1[i] = DspecialVals[i]; |
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} |
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for (; i < TESTSIZE; i++) { |
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DargV1[i] = r.nextDouble()*TESTSIZE; |
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} |
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} |
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@Benchmark |
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public void testceil(Blackhole bh) { |
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for (int i = 0; i < TESTSIZE; i++) |
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Res[i] = Math.ceil(DargV1[i]); |
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} |
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@Benchmark |
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public void testfloor(Blackhole bh) { |
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for (int i = 0; i < TESTSIZE; i++) |
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Res[i] = Math.floor(DargV1[i]); |
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} |
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@Benchmark |
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public void testrint(Blackhole bh) { |
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for (int i = 0; i < TESTSIZE; i++) |
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Res[i] = Math.rint(DargV1[i]); |
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} |
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} |