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Java example source code file (TestLongVect.java)

This example Java source code file (TestLongVect.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arrlen, iters, testlongvect

The TestLongVect.java Java example source code

/*
 * Copyright (c) 2012, 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.
 *
 */

/**
 * @test
 * @bug 7192963
 * @summary assert(_in[req-1] == this) failed: Must pass arg count to 'new'
 *
 * @run main/othervm/timeout=400 -Xbatch -Xmx64m TestLongVect
 */

public class TestLongVect {
  private static final int ARRLEN = 997;
  private static final int ITERS  = 11000;
  public static void main(String args[]) {
    System.out.println("Testing Long vectors");
    int errn = test();
    if (errn > 0) {
      System.err.println("FAILED: " + errn + " errors");
      System.exit(97);
    }
    System.out.println("PASSED");
  }

  static int test() {
    long[] a0 = new long[ARRLEN];
    long[] a1 = new long[ARRLEN];
    // Initialize
    for (int i=0; i<ARRLEN; i++) {
      a1[i] = (long)i;
    }
    System.out.println("Warmup");
    for (int i=0; i<ITERS; i++) {
      test_init(a0);
      test_addi(a0, a1);
      test_lsai(a0, a1);
      test_unrl_init(a0);
      test_unrl_addi(a0, a1);
      test_unrl_lsai(a0, a1);
    }
    // Test and verify results
    System.out.println("Verification");
    int errn = 0;
    {
      test_init(a0);
      for (int i=0; i<ARRLEN; i++) {
        errn += verify("test_init: ", i, a0[i], (long)(i&3));
      }
      test_addi(a0, a1);
      for (int i=0; i<ARRLEN; i++) {
        errn += verify("test_addi: ", i, a0[i], (long)(i+(i&3)));
      }
      test_lsai(a0, a1);
      for (int i=0; i<ARRLEN; i++) {
        errn += verify("test_lsai: ", i, a0[i], (long)(i<<(i&3)));
      }
      test_unrl_init(a0);
      for (int i=0; i<ARRLEN; i++) {
        errn += verify("test_unrl_init: ", i, a0[i], (long)(i&3));
      }
      test_unrl_addi(a0, a1);
      for (int i=0; i<ARRLEN; i++) {
        errn += verify("test_unrl_addi: ", i, a0[i], (long)(i+(i&3)));
      }
      test_unrl_lsai(a0, a1);
      for (int i=0; i<ARRLEN; i++) {
        errn += verify("test_unrl_lsai: ", i, a0[i], (long)(i<<(i&3)));
      }
    }

    if (errn > 0)
      return errn;

    System.out.println("Time");
    long start, end;

    start = System.currentTimeMillis();
    for (int i=0; i<ITERS; i++) {
      test_init(a0);
    }
    end = System.currentTimeMillis();
    System.out.println("test_init: " + (end - start));

    start = System.currentTimeMillis();
    for (int i=0; i<ITERS; i++) {
      test_addi(a0, a1);
    }
    end = System.currentTimeMillis();
    System.out.println("test_addi: " + (end - start));

    start = System.currentTimeMillis();
    for (int i=0; i<ITERS; i++) {
      test_lsai(a0, a1);
    }
    end = System.currentTimeMillis();
    System.out.println("test_lsai: " + (end - start));

    start = System.currentTimeMillis();
    for (int i=0; i<ITERS; i++) {
      test_unrl_init(a0);
    }
    end = System.currentTimeMillis();
    System.out.println("test_unrl_init: " + (end - start));

    start = System.currentTimeMillis();
    for (int i=0; i<ITERS; i++) {
      test_unrl_addi(a0, a1);
    }
    end = System.currentTimeMillis();
    System.out.println("test_unrl_addi: " + (end - start));

    start = System.currentTimeMillis();
    for (int i=0; i<ITERS; i++) {
      test_unrl_lsai(a0, a1);
    }
    end = System.currentTimeMillis();
    System.out.println("test_unrl_lsai: " + (end - start));

    return errn;
  }

  static void test_init(long[] a0) {
    for (int i = 0; i < a0.length; i+=1) {
      a0[i] = (long)(i&3);
    }
  }
  static void test_addi(long[] a0, long[] a1) {
    for (int i = 0; i < a0.length; i+=1) {
      a0[i] = (long)(a1[i]+(i&3));
    }
  }
  static void test_lsai(long[] a0, long[] a1) {
    for (int i = 0; i < a0.length; i+=1) {
      a0[i] = (long)(a1[i]<<(i&3));
    }
  }
  static void test_unrl_init(long[] a0) {
    int i = 0;
    for (; i < a0.length-4; i+=4) {
      a0[i+0] = 0;
      a0[i+1] = 1;
      a0[i+2] = 2;
      a0[i+3] = 3;
    }
    for (; i < a0.length; i++) {
      a0[i] = (long)(i&3);
    }
  }
  static void test_unrl_addi(long[] a0, long[] a1) {
    int i = 0;
    for (; i < a0.length-4; i+=4) {
      a0[i+0] = (long)(a1[i+0]+0);
      a0[i+1] = (long)(a1[i+1]+1);
      a0[i+2] = (long)(a1[i+2]+2);
      a0[i+3] = (long)(a1[i+3]+3);
    }
    for (; i < a0.length; i++) {
      a0[i] = (long)(a1[i]+(i&3));
    }
  }
  static void test_unrl_lsai(long[] a0, long[] a1) {
    int i = 0;
    for (; i < a0.length-4; i+=4) {
      a0[i+0] = (long)(a1[i+0]<<0);
      a0[i+1] = (long)(a1[i+1]<<1);
      a0[i+2] = (long)(a1[i+2]<<2);
      a0[i+3] = (long)(a1[i+3]<<3);
    }
    for (; i < a0.length; i++) {
      a0[i] = (long)(a1[i]<<(i&3));
    }
  }

  static int verify(String text, int i, long elem, long val) {
    if (elem != val) {
      System.err.println(text + "[" + i + "] = " + elem + " != " + val);
      return 1;
    }
    return 0;
  }
}

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