1 // Test of shiftRight and shiftLeft methods of BigInteger.

     2 

     3 /*************************************************************************

     4 /* This program is free software; you can redistribute it and/or modify

     5 /* it under the terms of the GNU General Public License as published 

     6 /* by the Free Software Foundation, either version 2 of the License, or

     7 /* (at your option) any later version.

     8 /*

     9 /* This program is distributed in the hope that it will be useful, but

    10 /* WITHOUT ANY WARRANTY; without even the implied warranty of

    11 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12 /* GNU General Public License for more details.

    13 /*

    14 /* You should have received a copy of the GNU General Public License

    15 /* along with this program; if not, write to the Free Software Foundation

    16 /* Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307 USA

    17 /*************************************************************************/

    18 

    19 // Tags: JDK1.1

    20 

    21 package gnu.testlet.java.math.BigInteger;

    22 

    23 import java.math.BigInteger;

    24 import gnu.testlet.Testlet;

    25 import gnu.testlet.TestHarness;

    26 

    27 public class shift implements Testlet

    28 {

    29   public void test (TestHarness harness)

    30   {

    31     harness.checkPoint ("shift");

    32     BigInteger x =

    33       new BigInteger ("-50123044517898350982301255831878893568", 10);

    34     harness.check (x.shiftRight(64).toString(), "-2717175687894652269");

    35     harness.check (x.shiftLeft(-64).toString(), "-2717175687894652269");

    36     harness.check (x.shiftRight(1).toString(),

    37       "-25061522258949175491150627915939446784");

    38     harness.check (x.shiftLeft(1).toString(), 

    39       "-100246089035796701964602511663757787136");

    40 

    41     harness.check (x.shiftRight(0).toString(), x.toString());

    42     harness.check (x.shiftLeft(0).toString(), x.toString());

    43 

    44     x = new BigInteger ("50123044517898350982301255831878893568", 10);

    45     harness.check (x.shiftRight(64).toString(), "2717175687894652268");

    46     harness.check (x.shiftLeft(-64).toString(), "2717175687894652268");

    47     harness.check (x.shiftRight(1).toString(),

    48       "25061522258949175491150627915939446784");

    49     harness.check (x.shiftLeft(1).toString(), 

    50       "100246089035796701964602511663757787136");

    51   }

    52 }