| /* |
| * Copyright (c) 2005, 2018, 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. |
| */ |
| package test.java.math.BigDecimal; |
| |
| /* |
| * @test |
| * @bug 6274390 7082971 |
| * @summary Verify {float, double}Value methods work with condensed representation |
| * @run main FloatDoubleValueTests |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+EliminateAutoBox -XX:AutoBoxCacheMax=20000 FloatDoubleValueTests |
| */ |
| |
| import java.math.*; |
| |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| // Android-changed: Replace error counting with asserts. |
| public class FloatDoubleValueTests { |
| private static final long two2the24 = 1L<<23; |
| private static final long two2the53 = 1L<<52; |
| |
| // Largest long that fits exactly in a float |
| private static final long maxFltLong = (long)(Integer.MAX_VALUE & ~(0xff)); |
| |
| // Largest long that fits exactly in a double |
| private static final long maxDblLong = Long.MAX_VALUE & ~(0x7ffL); |
| |
| static void testDoubleValue0(long i, BigDecimal bd) { |
| Assert.assertFalse(bd.doubleValue() != i || bd.longValue() != i, |
| "Unexpected equality failure for " + i + "\t" + bd); |
| } |
| |
| static void testFloatValue0(long i, BigDecimal bd) { |
| Assert.assertFalse(bd.floatValue() != i || bd.longValue() != i, |
| "Unexpected equality failure for " + i + "\t" + bd); |
| } |
| |
| static void checkFloat(BigDecimal bd, float f) { |
| float fbd = bd.floatValue(); |
| Assert.assertEquals(fbd, f, String.format("Bad conversion:"+ |
| "got %g (%a)\texpected %g (%a)", |
| f, f, fbd, fbd)); |
| } |
| |
| static void checkDouble(BigDecimal bd, double d) { |
| double dbd = bd.doubleValue(); |
| |
| Assert.assertEquals(dbd, d, String.format("Bad conversion:"+ |
| "got %g (%a)\texpected %g (%a)", |
| d, d, dbd, dbd)); |
| } |
| |
| // Test integral values that will convert exactly to both float |
| // and double. |
| @Test |
| public void testFloatDoubleValue() { |
| long[] longValues = { |
| Long.MIN_VALUE, // -2^63 |
| 0, |
| 1, |
| 2, |
| |
| two2the24-1, |
| two2the24, |
| two2the24+1, |
| |
| maxFltLong-1, |
| maxFltLong, |
| maxFltLong+1, |
| }; |
| |
| for(long i : longValues) { |
| BigDecimal bd1 = new BigDecimal(i); |
| BigDecimal bd2 = new BigDecimal(-i); |
| |
| testDoubleValue0( i, bd1); |
| testDoubleValue0(-i, bd2); |
| |
| testFloatValue0( i, bd1); |
| testFloatValue0(-i, bd2); |
| } |
| |
| } |
| |
| @Test |
| public void testDoubleValue() { |
| long[] longValues = { |
| Integer.MAX_VALUE-1, |
| Integer.MAX_VALUE, |
| (long)Integer.MAX_VALUE+1, |
| |
| two2the53-1, |
| two2the53, |
| two2the53+1, |
| |
| maxDblLong, |
| }; |
| |
| // Test integral values that will convert exactly to double |
| // but not float. |
| for(long i : longValues) { |
| BigDecimal bd1 = new BigDecimal(i); |
| BigDecimal bd2 = new BigDecimal(-i); |
| |
| testDoubleValue0( i, bd1); |
| testDoubleValue0(-i, bd2); |
| |
| checkFloat(bd1, (float)i); |
| checkFloat(bd2, -(float)i); |
| } |
| |
| // Now check values that should not convert the same in double |
| for(long i = maxDblLong; i < Long.MAX_VALUE; i++) { |
| BigDecimal bd1 = new BigDecimal(i); |
| BigDecimal bd2 = new BigDecimal(-i); |
| checkDouble(bd1, (double)i); |
| checkDouble(bd2, -(double)i); |
| |
| checkFloat(bd1, (float)i); |
| checkFloat(bd2, -(float)i); |
| } |
| |
| checkDouble(new BigDecimal(Long.MIN_VALUE), (double)Long.MIN_VALUE); |
| checkDouble(new BigDecimal(Long.MAX_VALUE), (double)Long.MAX_VALUE); |
| } |
| |
| @Test |
| public void testFloatValue() { |
| // Now check values that should not convert the same in float |
| for(long i = maxFltLong; i <= Integer.MAX_VALUE; i++) { |
| BigDecimal bd1 = new BigDecimal(i); |
| BigDecimal bd2 = new BigDecimal(-i); |
| checkFloat(bd1, (float)i); |
| checkFloat(bd2, -(float)i); |
| |
| testDoubleValue0( i, bd1); |
| testDoubleValue0(-i, bd2); |
| } |
| } |
| |
| @Test |
| public void testFloatValue1() { |
| checkFloat(new BigDecimal("85070591730234615847396907784232501249"), 8.507059e+37f); |
| checkFloat(new BigDecimal("7784232501249e12"), 7.7842326e24f); |
| checkFloat(new BigDecimal("907784232501249e-12"),907.78424f); |
| checkFloat(new BigDecimal("7784e8"),7.7839997e11f); |
| checkFloat(new BigDecimal("9077e-8"),9.077e-5f); |
| } |
| |
| @Test |
| public void testDoubleValue1() { |
| checkDouble(new BigDecimal("85070591730234615847396907784232501249"), 8.507059173023462e37); |
| checkDouble(new BigDecimal("7784232501249e12"), 7.784232501249e24); |
| checkDouble(new BigDecimal("907784232501249e-12"), 907.784232501249); |
| checkDouble(new BigDecimal("7784e8"), 7.784e11); |
| checkDouble(new BigDecimal("9077e-8"), 9.077e-5); |
| |
| } |
| } |