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8046060: Different results of floating point multiplication for lambda code block

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Propogate strictfp into lambda body

Reviewed-by: vromero, jlahoda
This commit is contained in:
Robert Field 2014-06-20 10:56:47 -07:00
parent fe46aeabb0
commit 5fad815dec
4 changed files with 215 additions and 0 deletions
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65
langtools/test/tools/javac/lambda/LambdaTestStrictFPMethod.java Normal file
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/*
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
* 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.
*/
/*
* @test
* @bug 8046060
* @summary Different results of floating point multiplication for lambda code block
*/
public class LambdaTestStrictFPMethod {
public static void main(String args[]) {
new LambdaTestStrictFPMethod().test();
}
strictfp void test() {
double result = eval(() -> {
double x = Double.longBitsToDouble(0x1e7ee00000000000L);
double y = Double.longBitsToDouble(0x2180101010101010L);
return x * y;
});
{
double x = Double.longBitsToDouble(0x1e7ee00000000000L);
double y = Double.longBitsToDouble(0x2180101010101010L);
double z = x * y;
check(z, result, "method");
}
}
strictfp void check(double expected, double got, String where) {
if (got != expected) {
throw new AssertionError(where + ": Non-strictfp " + got + " != " + expected);
}
}
static double eval(Face arg) {
return arg.m();
}
interface Face {
double m();
}
}