test/hotspot/jtreg/compiler/floatingpoint/DmodTest.java

/*
 * Copyright (c) 2023, Intel Corporation. All rights reserved.
 * Intel Math Library (LIBM) Source Code
 *
 * 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.
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 */

/**
 * @test
 * @bug 8308966
 * @summary Add intrinsic for float/double modulo for x86 AVX2 and AVX512
 * @run main compiler.floatingpoint.DmodTest
 */

 package compiler.floatingpoint;

 import java.lang.Double;

 public class DmodTest {
   static double [] op1 = { 1.2345d, 0.0d, -0.0d, 1.0d/0.0d, -1.0d/0.0d, 0.0d/0.0d };
   static double [] op2 = { 1.2345d, 0.0d, -0.0d, 1.0d/0.0d, -1.0d/0.0d, 0.0d/0.0d };
   static double [][] res = {
      {
        0.0d,
        Double.NaN,
        Double.NaN,
        1.2345d,
        1.2345d,
        Double.NaN,
      },
      {
        0.0d,
        Double.NaN,
        Double.NaN,
        0.0d,
        0.0d,
        Double.NaN,
      },
      {
        -0.0d,
        Double.NaN,
        Double.NaN,
        -0.0d,
        -0.0d,
        Double.NaN,
      },
      {
        Double.NaN,
        Double.NaN,
        Double.NaN,
        Double.NaN,
        Double.NaN,
        Double.NaN,
      },
      {
        Double.NaN,
        Double.NaN,
        Double.NaN,
        Double.NaN,
        Double.NaN,
        Double.NaN,
      },
      {
        Double.NaN,
        Double.NaN,
        Double.NaN,
        Double.NaN,
        Double.NaN,
        Double.NaN,
      },
   };
   public static void main(String[] args) throws Exception {
     double f1, f2, f3;
     boolean failure = false;
     boolean print_failure = false;
     for (int i = 0; i < 100_000; i++) {
       for (int j = 0; j < op1.length; j++) {
         for (int k = 0; k < op2.length; k++) {
           f1 = op1[j];
           f2 = op2[k];
           f3 = f1 % f2;

           if (Double.isNaN(res[j][k])) {
             if (!Double.isNaN(f3)) {
               failure = true;
               print_failure = true;
             }
           } else if (Double.isNaN(f3)) {
             failure = true;
             print_failure = true;
           } else if (f3 != res[j][k]) {
             failure = true;
             print_failure = true;
           }

           if (print_failure) {
             System.out.println( "Actual   " + f1 + " % " + f2 + " = " + f3);
             System.out.println( "Expected " + f1 + " % " + f2 + " = " + res[j][k]);
             print_failure = false;
           }
         }
       }
     }

    if (failure) {
      throw new RuntimeException("Test Failed");
    } else {
      System.out.println("Test passed.");
    }
 }
}