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test/tools/javac/lambda/LambdaTestStrictFP.java@eb284abd64fe (annotated)

test/tools/javac/lambda/LambdaTestStrictFP.java

Mon, 23 Jun 2014 13:14:32 -0700

author

rfield

date

Mon, 23 Jun 2014 13:14:32 -0700

changeset 2528

eb284abd64fe

permissions

-rw-r--r--

8046060: Different results of floating point multiplication for lambda code block
Summary: propogate strictfp into lambda body
Reviewed-by: vromero, jlahoda

rfield@2528	1	/*
rfield@2528	2	* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
rfield@2528	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
rfield@2528	4	*
rfield@2528	5	* This code is free software; you can redistribute it and/or modify it
rfield@2528	6	* under the terms of the GNU General Public License version 2 only, as
rfield@2528	7	* published by the Free Software Foundation.
rfield@2528	8	*
rfield@2528	9	* This code is distributed in the hope that it will be useful, but WITHOUT
rfield@2528	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
rfield@2528	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
rfield@2528	12	* version 2 for more details (a copy is included in the LICENSE file that
rfield@2528	13	* accompanied this code).
rfield@2528	14	*
rfield@2528	15	* You should have received a copy of the GNU General Public License version
rfield@2528	16	* 2 along with this work; if not, write to the Free Software Foundation,
rfield@2528	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
rfield@2528	18	*
rfield@2528	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
rfield@2528	20	* or visit www.oracle.com if you need additional information or have any
rfield@2528	21	* questions.
rfield@2528	22	*/
rfield@2528	23
rfield@2528	24	/*
rfield@2528	25	* @test
rfield@2528	26	* @bug 8046060
rfield@2528	27	* @summary Different results of floating point multiplication for lambda code block
rfield@2528	28	*/
rfield@2528	29
rfield@2528	30	strictfp
rfield@2528	31	public class LambdaTestStrictFP {
rfield@2528	32
rfield@2528	33	static double fld = eval(() -> {
rfield@2528	34	double x = Double.longBitsToDouble(0x1e7ee00000000000L);
rfield@2528	35	double y = Double.longBitsToDouble(0x2180101010101010L);
rfield@2528	36
rfield@2528	37	return x * y;
rfield@2528	38	});
rfield@2528	39
rfield@2528	40	public static void main(String args[]) {
rfield@2528	41	double result = eval(() -> {
rfield@2528	42	double x = Double.longBitsToDouble(0x1e7ee00000000000L);
rfield@2528	43	double y = Double.longBitsToDouble(0x2180101010101010L);
rfield@2528	44
rfield@2528	45	return x * y;
rfield@2528	46	});
rfield@2528	47	{
rfield@2528	48	double x = Double.longBitsToDouble(0x1e7ee00000000000L);
rfield@2528	49	double y = Double.longBitsToDouble(0x2180101010101010L);
rfield@2528	50
rfield@2528	51	double z = x * y;
rfield@2528	52	check(z, result, "method");
rfield@2528	53	check(z, fld, "field");
rfield@2528	54	}
rfield@2528	55	}
rfield@2528	56
rfield@2528	57	private static void check(double expected, double got, String where) {
rfield@2528	58	if (got != expected) {
rfield@2528	59	throw new AssertionError(where + ": Non-strictfp " + got + " != " + expected);
rfield@2528	60	}
rfield@2528	61	}
rfield@2528	62
rfield@2528	63	private static double eval(Face arg) {
rfield@2528	64	return arg.m();
rfield@2528	65	}
rfield@2528	66
rfield@2528	67	private interface Face {
rfield@2528	68	double m();
rfield@2528	69	}
rfield@2528	70	}