1 /*
   2  * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  *
  27  * @summary converted from VM Testbase jit/wide/wide02.
  28  * VM Testbase keywords: [jit, quick]
  29  *
  30  * @library /vmTestbase
  31  *          /test/lib
  32  * @run driver jdk.test.lib.FileInstaller . .
  33  * @build jit.wide.wide02.wide02
  34  * @run driver ExecDriver --java jit.wide.wide02.wide02
  35  */
  36 
  37 package jit.wide.wide02;
  38 
  39 import nsk.share.TestFailure;
  40 
  41 /*
  42      Check for intermediate results that are too wide.
  43      The too-wide.java test will fail if the the result of the
  44      expression (f0+f24) is maintained in greater-than-float precision
  45      or if the result of the expression (d0+d53) is maintained in
  46      greater-than-double precision.
  47 */
  48 class wide02
  49 {
  50    static double twoto(int n) {
  51        double res = 1.0;
  52        while(n > 0) {
  53            res *= 2.0;
  54            n -= 1;
  55        }
  56        return res;
  57    }
  58 
  59    public static void main(String[] arg) {
  60        float f0 = (float) twoto(0);
  61        float f24 = (float) twoto(24);
  62        if(f0 + f24 + f0 == f24)
  63            System.out.println("Float test PASSES.");
  64        else
  65            throw new TestFailure("Float test FAILS");
  66 
  67        double d0 = twoto(0);
  68        double d53 = twoto(53);
  69        if(d0 + d53 + d0 == d53)
  70            System.out.println("Double test PASSES.");
  71        else
  72            throw new TestFailure("Double test FAILS");
  73    }
  74 }