56 lines
1.9 KiB
Java
56 lines
1.9 KiB
Java
/*
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* Copyright (c) 2023, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8295159
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* @summary DSO created with -ffast-math breaks Java floating-point arithmetic
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* @run main/othervm/native -Xlog:os=info compiler.floatingpoint.TestSubnormalFloat
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*/
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package compiler.floatingpoint;
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import static java.lang.System.loadLibrary;
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public class TestSubnormalFloat {
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static volatile float lastFloat;
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private static void testFloats() {
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lastFloat = 0x1.0p-149f;
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for (float x = lastFloat * 2; x <= 0x1.0p127f; x *= 2) {
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if (x != x || x <= lastFloat) {
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throw new RuntimeException("TEST FAILED: " + x);
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}
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lastFloat = x;
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}
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}
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public static void main(String[] args) {
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testFloats();
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System.out.println("Loading libfast-math.so");
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loadLibrary("fast-math");
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testFloats();
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System.out.println("Test passed.");
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}
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}
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