1 /*
   2  * Copyright (c) 2009, 2012, 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 package com.oracle.graal.compiler.hsail.test;
  25 
  26 import com.oracle.graal.compiler.hsail.test.infra.GraalKernelTester;
  27 import org.junit.Test;
  28 
  29 /**
  30  * This test (originally derived from a discrepancy seen in Mandel) showed a difference in the
  31  * division answers when run on Bonaire hardware (compared to Java).
  32  */
  33 public class FloatDivPrecisionTest extends GraalKernelTester {
  34 
  35     static final int width = 768;
  36     static final int height = width;
  37     static final int range = width * height;
  38     @Result private float[] floatResult = new float[range];
  39 
  40     public static void run(float[] floatOut, int gid) {
  41         floatOut[gid] = gid / (float) width;
  42     }
  43 
  44     @Override
  45     public void runTest() {
  46         dispatchMethodKernel(range, floatResult);
  47 
  48     }
  49 
  50     /**
  51      * Allows subclass to override what FP equality means for this particular unit test.
  52      * 
  53      */
  54     @Override
  55     public boolean isEqualsFP(double first, double second) {
  56         return Math.abs(first - second) == 0;
  57     }
  58 
  59     @Test
  60     public void test() {
  61         testGeneratedHsail();
  62     }
  63 }