1/* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 8046060 27 * @summary Different results of floating point multiplication for lambda code block 28 */ 29 30strictfp 31public class LambdaTestStrictFP { 32 33 static double fld = eval(() -> { 34 double x = Double.longBitsToDouble(0x1e7ee00000000000L); 35 double y = Double.longBitsToDouble(0x2180101010101010L); 36 37 return x * y; 38 }); 39 40 public static void main(String args[]) { 41 double result = eval(() -> { 42 double x = Double.longBitsToDouble(0x1e7ee00000000000L); 43 double y = Double.longBitsToDouble(0x2180101010101010L); 44 45 return x * y; 46 }); 47 { 48 double x = Double.longBitsToDouble(0x1e7ee00000000000L); 49 double y = Double.longBitsToDouble(0x2180101010101010L); 50 51 double z = x * y; 52 check(z, result, "method"); 53 check(z, fld, "field"); 54 } 55 } 56 57 private static void check(double expected, double got, String where) { 58 if (got != expected) { 59 throw new AssertionError(where + ": Non-strictfp " + got + " != " + expected); 60 } 61 } 62 63 private static double eval(Face arg) { 64 return arg.m(); 65 } 66 67 private interface Face { 68 double m(); 69 } 70} 71