Test.java

/*
 * Copyright (c) 2006, 2013, 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 6431242
 * @run main Test
 */

public class Test{

  int    _len      = 8;
  int[]  _arr_i    = new int[_len];
  long[] _arr_l    = new long[_len];

  int[]  _arr_i_cp = new int [_len];
  long[] _arr_l_cp = new long [_len];

  int _k     = 0x12345678;
  int _j     = 0;
  int _ir    = 0x78563412;
  int _ir1   = 0x78563413;
  int _ir2   = 0x79563412;

  long _m    = 0x123456789abcdef0L;
  long _l    = 0L;
  long _lr   = 0xf0debc9a78563412L;
  long _lr1  = 0xf0debc9a78563413L;
  long _lr2  = 0xf1debc9a78563412L;

  void init() {
    for (int i=0; i<_arr_i.length; i++) {
      _arr_i[i] = _k;
      _arr_l[i] = _m;
    }
  }

  public int test_int_reversed(int i) {
    return Integer.reverseBytes(i);
  }

  public long test_long_reversed(long i) {
    return Long.reverseBytes(i);
  }

  public void test_copy_ints(int[] dst, int[] src) {
    for(int i=0; i<src.length; i++) {
      dst[i] = Integer.reverseBytes(src[i]);
    }
  }

  public void test_copy_ints_reversed(int[] dst, int[] src) {
    for (int i=0; i<src.length; i++) {
      dst[i] = 1 + Integer.reverseBytes(src[i]);
    }
  }

  public void test_copy_ints_store_reversed(int[] dst, int[] src) {
    for(int i=0; i<src.length; i++) {
      dst[i] = Integer.reverseBytes(1 + src[i]);
    }
  }

  public void test_copy_longs(long[] dst, long[] src) {
    for(int i=0; i<src.length; i++) {
      dst[i] = Long.reverseBytes(src[i]);
    }
  }

  public void test_copy_longs_reversed(long[] dst, long[] src) {
    for (int i=0; i<src.length; i++) {
      dst[i] = 1 + Long.reverseBytes(src[i]);
    }
  }

  public void test_copy_longs_store_reversed(long[] dst, long[] src) {
    for(int i=0; i<src.length; i++) {
      dst[i] = Long.reverseBytes(1 + src[i]);
    }
  }

  public void test() throws Exception {
    int up_limit=90000;


    //test single

    for (int loop=0; loop<up_limit; loop++) {
      _j = test_int_reversed(_k);
      if (_j != _ir ) {
        throw new Exception("Interger.reverseBytes failed " + _j + " iter " + loop);
      }
      _l = test_long_reversed(_m);
      if (_l != _lr ) {
        throw new Exception("Long.reverseBytes failed " + _l + " iter " + loop);
      }
    }

    // test scalar load/store
    for (int loop=0; loop<up_limit; loop++) {

      test_copy_ints(_arr_i_cp, _arr_i);
      for (int j=0; j< _arr_i.length; j++) {
        if (_arr_i_cp[j] != _ir) {
          throw new Exception("Interger.reverseBytes failed test_copy_ints iter " + loop);
        }
      }

      test_copy_ints_reversed(_arr_i_cp, _arr_i);
      for (int j=0; j< _arr_i.length; j++) {
        if (_arr_i_cp[j] != _ir1) {
          throw new Exception("Interger.reverseBytes failed test_copy_ints_reversed iter " + loop);
        }
      }
      test_copy_ints_store_reversed(_arr_i_cp, _arr_i);
      for (int j=0; j< _arr_i.length; j++) {
        if (_arr_i_cp[j] != _ir2) {
          throw new Exception("Interger.reverseBytes failed test_copy_ints_store_reversed iter " + loop);
        }
      }

      test_copy_longs(_arr_l_cp, _arr_l);
      for (int j=0; j< _arr_i.length; j++) {
        if (_arr_l_cp[j] != _lr) {
          throw new Exception("Long.reverseBytes failed test_copy_longs iter " + loop);
        }
      }
      test_copy_longs_reversed(_arr_l_cp, _arr_l);
      for (int j=0; j< _arr_i.length; j++) {
        if (_arr_l_cp[j] != _lr1) {
          throw new Exception("Long.reverseBytes failed test_copy_longs_reversed iter " + loop);
        }
      }
      test_copy_longs_store_reversed(_arr_l_cp, _arr_l);
      for (int j=0; j< _arr_i.length; j++) {
        if (_arr_l_cp[j] != _lr2) {
          throw new Exception("Long.reverseBytes failed test_copy_longs_store_reversed iter " + loop);
        }
      }

    }
  }

  public static void main(String args[]) {
    try {
      Test t = new Test();
      t.init();
      t.test();
      System.out.println("Passed");
    }catch (Exception e) {
      e.printStackTrace();
      System.out.println("Failed");
    }
  }
}