Test6796786.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/**
 * @test
 * @bug 6796786
 * @summary invalid FP identity transform - (a - b) -> b - a
 *
 * @run main/othervm -Xbatch Test6796786
 */

public class Test6796786 {
    static volatile float d1;
    static volatile float d2;

    public static void main(String[] args) {
        int total = 0;
        for (int i = 0; i < 100000; i++) {
            if (Float.floatToRawIntBits(- (d1 - d2)) == Float.floatToRawIntBits(-0.0f)) {
                total++;
            }
        }
        if (total != 100000) {
            throw new InternalError();
        }
    }
}