author | hannesw |
Thu, 11 Jul 2019 17:11:54 +0200 | |
changeset 55665 | 70b1c1bec669 |
parent 47216 | 71c04702a3d5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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|
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// This file is available under and governed by the GNU General Public |
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// License version 2 only, as published by the Free Software Foundation. |
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// However, the following notice accompanied the original version of this |
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// file: |
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// |
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// Copyright 2012 the V8 project authors. All rights reserved. |
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// Redistribution and use in source and binary forms, with or without |
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// modification, are permitted provided that the following conditions are |
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// met: |
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// |
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// * Redistributions of source code must retain the above copyright |
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// notice, this list of conditions and the following disclaimer. |
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// * Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following |
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// disclaimer in the documentation and/or other materials provided |
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// with the distribution. |
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// * Neither the name of Google Inc. nor the names of its |
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// contributors may be used to endorse or promote products derived |
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// from this software without specific prior written permission. |
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// |
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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package jdk.nashorn.internal.runtime.doubleconv.test; |
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import java.io.BufferedReader; |
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import java.io.InputStreamReader; |
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import jdk.nashorn.internal.runtime.doubleconv.DoubleConversion; |
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import jdk.nashorn.internal.runtime.doubleconv.DtoaBuffer; |
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import jdk.nashorn.internal.runtime.doubleconv.DtoaMode; |
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import org.testng.annotations.Test; |
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import static org.testng.Assert.assertEquals; |
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import static org.testng.Assert.assertTrue; |
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/** |
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* BignumDtoa tests |
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*/ |
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@SuppressWarnings("javadoc") |
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public class BignumDtoaTest { |
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final static private int BUFFER_SIZE = 100; |
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// Removes trailing '0' digits. |
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// Can return the empty string if all digits are 0. |
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private static String trimRepresentation(final String representation) { |
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final int len = representation.length(); |
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int i; |
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for (i = len - 1; i >= 0; --i) { |
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if (representation.charAt(i) != '0') break; |
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} |
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return representation.substring(0, i + 1); |
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} |
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@Test |
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public void testBignumVarious() { |
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final DtoaBuffer buffer = new DtoaBuffer(BUFFER_SIZE); |
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DoubleConversion.bignumDtoa(1, DtoaMode.SHORTEST, 0, buffer); |
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assertEquals("1", buffer.getRawDigits()); |
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assertEquals(1, buffer.getDecimalPoint()); |
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buffer.reset(); |
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DoubleConversion.bignumDtoa(1.0, DtoaMode.FIXED, 3, buffer); |
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assertTrue(3 >= buffer.getLength() - buffer.getDecimalPoint()); |
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assertEquals("1", trimRepresentation(buffer.getRawDigits())); |
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assertEquals(1, buffer.getDecimalPoint()); |
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buffer.reset(); |
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DoubleConversion.bignumDtoa(1.0, DtoaMode.PRECISION, 3, buffer); |
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assertTrue(3 >= buffer.getLength()); |
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assertEquals("1", trimRepresentation(buffer.getRawDigits())); |
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assertEquals(1, buffer.getDecimalPoint()); |
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buffer.reset(); |
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DoubleConversion.bignumDtoa(1.5, DtoaMode.SHORTEST, 0, buffer); |
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assertEquals("15", buffer.getRawDigits()); |
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assertEquals(1, buffer.getDecimalPoint()); |
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buffer.reset(); |
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DoubleConversion.bignumDtoa(1.5, DtoaMode.FIXED, 10, buffer); |
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assertTrue(10 >= buffer.getLength() - buffer.getDecimalPoint()); |
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assertEquals("15", trimRepresentation(buffer.getRawDigits())); |
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assertEquals(1, buffer.getDecimalPoint()); |
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buffer.reset(); |
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DoubleConversion.bignumDtoa(1.5, DtoaMode.PRECISION, 10, buffer); |
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assertTrue(10 >= buffer.getLength()); |
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assertEquals("15", trimRepresentation(buffer.getRawDigits())); |
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assertEquals(1, buffer.getDecimalPoint()); |
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buffer.reset(); |
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final double min_double = 5e-324; |
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DoubleConversion.bignumDtoa(min_double, DtoaMode.SHORTEST, 0, buffer); |
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assertEquals("5", buffer.getRawDigits()); |
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assertEquals(-323, buffer.getDecimalPoint()); |
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buffer.reset(); |
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DoubleConversion.bignumDtoa(min_double, DtoaMode.FIXED, 5, buffer); |
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assertTrue(5 >= buffer.getLength() - buffer.getDecimalPoint()); |
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assertEquals("", trimRepresentation(buffer.getRawDigits())); |
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buffer.reset(); |
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DoubleConversion.bignumDtoa(min_double, DtoaMode.PRECISION, 5, buffer); |
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assertTrue(5 >= buffer.getLength()); |
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141 |
assertEquals("49407", trimRepresentation(buffer.getRawDigits())); |
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142 |
assertEquals(-323, buffer.getDecimalPoint()); |
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|
143 |
buffer.reset(); |
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|
144 |
|
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final double max_double = 1.7976931348623157e308; |
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146 |
DoubleConversion.bignumDtoa(max_double, DtoaMode.SHORTEST, 0, buffer); |
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assertEquals("17976931348623157", buffer.getRawDigits()); |
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148 |
assertEquals(309, buffer.getDecimalPoint()); |
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149 |
buffer.reset(); |
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|
150 |
|
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151 |
DoubleConversion.bignumDtoa(max_double, DtoaMode.PRECISION, 7, buffer); |
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assertTrue(7 >= buffer.getLength()); |
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153 |
assertEquals("1797693", trimRepresentation(buffer.getRawDigits())); |
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154 |
assertEquals(309, buffer.getDecimalPoint()); |
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155 |
buffer.reset(); |
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|
156 |
|
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157 |
DoubleConversion.bignumDtoa(4294967272.0, DtoaMode.SHORTEST, 0, buffer); |
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|
158 |
assertEquals("4294967272", buffer.getRawDigits()); |
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|
159 |
assertEquals(10, buffer.getDecimalPoint()); |
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|
160 |
buffer.reset(); |
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|
161 |
|
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|
162 |
DoubleConversion.bignumDtoa(4294967272.0, DtoaMode.FIXED, 5, buffer); |
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|
163 |
assertEquals("429496727200000", buffer.getRawDigits()); |
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|
164 |
assertEquals(10, buffer.getDecimalPoint()); |
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|
165 |
buffer.reset(); |
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changeset
|
166 |
|
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|
167 |
DoubleConversion.bignumDtoa(4294967272.0, DtoaMode.PRECISION, 14, buffer); |
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|
168 |
assertTrue(14 >= buffer.getLength()); |
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|
169 |
assertEquals("4294967272", trimRepresentation(buffer.getRawDigits())); |
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|
170 |
assertEquals(10, buffer.getDecimalPoint()); |
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|
171 |
buffer.reset(); |
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|
172 |
|
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173 |
DoubleConversion.bignumDtoa(4.1855804968213567e298, DtoaMode.SHORTEST, 0, buffer); |
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174 |
assertEquals("4185580496821357", buffer.getRawDigits()); |
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|
175 |
assertEquals(299, buffer.getDecimalPoint()); |
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|
176 |
buffer.reset(); |
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changeset
|
177 |
|
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|
178 |
DoubleConversion.bignumDtoa(4.1855804968213567e298, DtoaMode.PRECISION, 20, buffer); |
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|
179 |
assertTrue(20 >= buffer.getLength()); |
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|
180 |
assertEquals("41855804968213567225", trimRepresentation(buffer.getRawDigits())); |
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|
181 |
assertEquals(299, buffer.getDecimalPoint()); |
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|
182 |
buffer.reset(); |
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changeset
|
183 |
|
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|
184 |
DoubleConversion.bignumDtoa(5.5626846462680035e-309, DtoaMode.SHORTEST, 0, buffer); |
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|
185 |
assertEquals("5562684646268003", buffer.getRawDigits()); |
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|
186 |
assertEquals(-308, buffer.getDecimalPoint()); |
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changeset
|
187 |
buffer.reset(); |
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changeset
|
188 |
|
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|
189 |
DoubleConversion.bignumDtoa(5.5626846462680035e-309, DtoaMode.PRECISION, 1, buffer); |
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|
190 |
assertTrue(1 >= buffer.getLength()); |
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|
191 |
assertEquals("6", trimRepresentation(buffer.getRawDigits())); |
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|
192 |
assertEquals(-308, buffer.getDecimalPoint()); |
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changeset
|
193 |
buffer.reset(); |
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changeset
|
194 |
|
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|
195 |
DoubleConversion.bignumDtoa(2147483648.0, DtoaMode.SHORTEST, 0, buffer); |
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changeset
|
196 |
assertEquals("2147483648", buffer.getRawDigits()); |
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changeset
|
197 |
assertEquals(10, buffer.getDecimalPoint()); |
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changeset
|
198 |
buffer.reset(); |
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changeset
|
199 |
|
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|
200 |
DoubleConversion.bignumDtoa(2147483648.0, DtoaMode.FIXED, 2, buffer); |
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changeset
|
201 |
assertTrue(2 >= buffer.getLength() - buffer.getDecimalPoint()); |
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changeset
|
202 |
assertEquals("2147483648", trimRepresentation(buffer.getRawDigits())); |
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changeset
|
203 |
assertEquals(10, buffer.getDecimalPoint()); |
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changeset
|
204 |
buffer.reset(); |
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changeset
|
205 |
|
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changeset
|
206 |
DoubleConversion.bignumDtoa(2147483648.0, DtoaMode.PRECISION, 5, buffer); |
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changeset
|
207 |
assertTrue(5 >= buffer.getLength()); |
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changeset
|
208 |
assertEquals("21475", trimRepresentation(buffer.getRawDigits())); |
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changeset
|
209 |
assertEquals(10, buffer.getDecimalPoint()); |
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changeset
|
210 |
buffer.reset(); |
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diff
changeset
|
211 |
|
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changeset
|
212 |
DoubleConversion.bignumDtoa(3.5844466002796428e+298, DtoaMode.SHORTEST, 0, buffer); |
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changeset
|
213 |
assertEquals("35844466002796428", buffer.getRawDigits()); |
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changeset
|
214 |
assertEquals(299, buffer.getDecimalPoint()); |
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diff
changeset
|
215 |
buffer.reset(); |
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hannesw
parents:
diff
changeset
|
216 |
|
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changeset
|
217 |
DoubleConversion.bignumDtoa(3.5844466002796428e+298, DtoaMode.PRECISION, 10, buffer); |
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changeset
|
218 |
assertTrue(10 >= buffer.getLength()); |
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changeset
|
219 |
assertEquals("35844466", trimRepresentation(buffer.getRawDigits())); |
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changeset
|
220 |
assertEquals(299, buffer.getDecimalPoint()); |
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changeset
|
221 |
buffer.reset(); |
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changeset
|
222 |
|
55665
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diff
changeset
|
223 |
DoubleConversion.bignumDtoa(1e-23, DtoaMode.SHORTEST, 0, buffer); |
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changeset
|
224 |
assertEquals("1", buffer.getRawDigits()); |
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|
225 |
assertEquals(-22, buffer.getDecimalPoint()); |
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changeset
|
226 |
buffer.reset(); |
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changeset
|
227 |
|
33689
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changeset
|
228 |
final long smallest_normal64 = 0x0010000000000000L; |
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changeset
|
229 |
double v = Double.longBitsToDouble(smallest_normal64); |
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changeset
|
230 |
DoubleConversion.bignumDtoa(v, DtoaMode.SHORTEST, 0, buffer); |
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changeset
|
231 |
assertEquals("22250738585072014", buffer.getRawDigits()); |
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changeset
|
232 |
assertEquals(-307, buffer.getDecimalPoint()); |
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diff
changeset
|
233 |
buffer.reset(); |
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diff
changeset
|
234 |
|
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changeset
|
235 |
DoubleConversion.bignumDtoa(v, DtoaMode.PRECISION, 20, buffer); |
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changeset
|
236 |
assertTrue(20 >= buffer.getLength()); |
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diff
changeset
|
237 |
assertEquals("22250738585072013831", trimRepresentation(buffer.getRawDigits())); |
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diff
changeset
|
238 |
assertEquals(-307, buffer.getDecimalPoint()); |
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hannesw
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diff
changeset
|
239 |
buffer.reset(); |
a42cdb474da0
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hannesw
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diff
changeset
|
240 |
|
a42cdb474da0
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hannesw
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diff
changeset
|
241 |
final long largest_denormal64 = 0x000FFFFFFFFFFFFFL; |
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changeset
|
242 |
v = Double.longBitsToDouble(largest_denormal64); |
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changeset
|
243 |
DoubleConversion.bignumDtoa(v, DtoaMode.SHORTEST, 0, buffer); |
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changeset
|
244 |
assertEquals("2225073858507201", buffer.getRawDigits()); |
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changeset
|
245 |
assertEquals(-307, buffer.getDecimalPoint()); |
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hannesw
parents:
diff
changeset
|
246 |
buffer.reset(); |
a42cdb474da0
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hannesw
parents:
diff
changeset
|
247 |
|
a42cdb474da0
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changeset
|
248 |
DoubleConversion.bignumDtoa(v, DtoaMode.PRECISION, 20, buffer); |
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changeset
|
249 |
assertTrue(20 >= buffer.getLength()); |
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diff
changeset
|
250 |
assertEquals("2225073858507200889", trimRepresentation(buffer.getRawDigits())); |
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diff
changeset
|
251 |
assertEquals(-307, buffer.getDecimalPoint()); |
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hannesw
parents:
diff
changeset
|
252 |
buffer.reset(); |
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parents:
diff
changeset
|
253 |
|
a42cdb474da0
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hannesw
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diff
changeset
|
254 |
DoubleConversion.bignumDtoa(4128420500802942e-24, DtoaMode.SHORTEST, 0, buffer); |
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changeset
|
255 |
assertEquals("4128420500802942", buffer.getRawDigits()); |
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diff
changeset
|
256 |
assertEquals(-8, buffer.getDecimalPoint()); |
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hannesw
parents:
diff
changeset
|
257 |
buffer.reset(); |
a42cdb474da0
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hannesw
parents:
diff
changeset
|
258 |
|
a42cdb474da0
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hannesw
parents:
diff
changeset
|
259 |
DoubleConversion.bignumDtoa(3.9292015898194142585311918e-10, DtoaMode.SHORTEST, 0, buffer); |
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diff
changeset
|
260 |
assertEquals("39292015898194143", buffer.getRawDigits()); |
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hannesw
parents:
diff
changeset
|
261 |
buffer.reset(); |
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hannesw
parents:
diff
changeset
|
262 |
|
a42cdb474da0
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hannesw
parents:
diff
changeset
|
263 |
v = 4194304.0; |
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hannesw
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diff
changeset
|
264 |
DoubleConversion.bignumDtoa(v, DtoaMode.FIXED, 5, buffer); |
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diff
changeset
|
265 |
assertTrue(5 >= buffer.getLength() - buffer.getDecimalPoint()); |
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diff
changeset
|
266 |
assertEquals("4194304", trimRepresentation(buffer.getRawDigits())); |
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hannesw
parents:
diff
changeset
|
267 |
buffer.reset(); |
a42cdb474da0
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hannesw
parents:
diff
changeset
|
268 |
|
a42cdb474da0
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diff
changeset
|
269 |
v = 3.3161339052167390562200598e-237; |
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changeset
|
270 |
DoubleConversion.bignumDtoa(v, DtoaMode.PRECISION, 19, buffer); |
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diff
changeset
|
271 |
assertTrue(19 >= buffer.getLength()); |
a42cdb474da0
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hannesw
parents:
diff
changeset
|
272 |
assertEquals("3316133905216739056", trimRepresentation(buffer.getRawDigits())); |
a42cdb474da0
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assertEquals(-236, buffer.getDecimalPoint()); |
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buffer.reset(); |
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275 |
|
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v = 7.9885183916008099497815232e+191; |
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DoubleConversion.bignumDtoa(v, DtoaMode.PRECISION, 4, buffer); |
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assertTrue(4 >= buffer.getLength()); |
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assertEquals("7989", trimRepresentation(buffer.getRawDigits())); |
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assertEquals(192, buffer.getDecimalPoint()); |
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buffer.reset(); |
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282 |
|
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v = 1.0000000000000012800000000e+17; |
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DoubleConversion.bignumDtoa(v, DtoaMode.FIXED, 1, buffer); |
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assertTrue(1 >= buffer.getLength() - buffer.getDecimalPoint()); |
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assertEquals("100000000000000128", trimRepresentation(buffer.getRawDigits())); |
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assertEquals(18, buffer.getDecimalPoint()); |
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buffer.reset(); |
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289 |
} |
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290 |
|
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291 |
|
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292 |
@Test |
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293 |
public void testBignumShortest() { |
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new BufferedReader(new InputStreamReader(getClass().getResourceAsStream("resources/gay-shortest.txt"))) |
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295 |
.lines() |
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296 |
.forEach(line -> { |
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297 |
if (line.isEmpty() || line.startsWith("//")) { |
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298 |
return; // comment or empty line |
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299 |
} |
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300 |
final String[] tokens = line.split(",\\s+"); |
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301 |
assertEquals(tokens.length, 3, "*" + line + "*"); |
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final double v = Double.parseDouble(tokens[0]); |
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final String str = tokens[1].replace('"', ' ').trim();; |
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final int point = Integer.parseInt(tokens[2]); |
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305 |
final DtoaBuffer buffer = new DtoaBuffer(BUFFER_SIZE); |
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|
306 |
|
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DoubleConversion.bignumDtoa(v, DtoaMode.SHORTEST, 0, buffer); |
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308 |
assertEquals(str, buffer.getRawDigits()); |
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309 |
assertEquals(point, buffer.getDecimalPoint()); |
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|
310 |
}); |
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|
311 |
} |
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|
312 |
|
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313 |
@Test |
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|
314 |
public void testBignumFixed() { |
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|
315 |
new BufferedReader(new InputStreamReader(getClass().getResourceAsStream("resources/gay-fixed.txt"))) |
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|
316 |
.lines() |
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|
317 |
.forEach(line -> { |
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|
318 |
if (line.isEmpty() || line.startsWith("//")) { |
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|
319 |
return; // comment or empty line |
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|
320 |
} |
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|
321 |
final String[] tokens = line.split(",\\s+"); |
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|
322 |
assertEquals(tokens.length, 4); |
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|
323 |
final double v = Double.parseDouble(tokens[0]); |
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|
324 |
final int digits = Integer.parseInt(tokens[1]); |
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|
325 |
final String str = tokens[2].replace('"', ' ').trim(); |
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|
326 |
final int point = Integer.parseInt(tokens[3]); |
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|
327 |
final DtoaBuffer buffer = new DtoaBuffer(BUFFER_SIZE); |
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|
328 |
|
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|
329 |
DoubleConversion.bignumDtoa(v, DtoaMode.FIXED, digits, buffer); |
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|
330 |
assertEquals(str, trimRepresentation(buffer.getRawDigits())); |
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|
331 |
assertEquals(point, buffer.getDecimalPoint()); |
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|
332 |
}); |
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|
333 |
} |
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changeset
|
334 |
|
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|
335 |
@Test |
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|
336 |
public void testBignumPrecision() { |
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|
337 |
new BufferedReader(new InputStreamReader(getClass().getResourceAsStream("resources/gay-precision.txt"))) |
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changeset
|
338 |
.lines() |
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changeset
|
339 |
.forEach(line -> { |
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changeset
|
340 |
if (line.isEmpty() || line.startsWith("//")) { |
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changeset
|
341 |
return; // comment or empty line |
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changeset
|
342 |
} |
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|
343 |
final String[] tokens = line.split(",\\s+"); |
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|
344 |
assertEquals(tokens.length, 4); |
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|
345 |
final double v = Double.parseDouble(tokens[0]); |
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|
346 |
final int digits = Integer.parseInt(tokens[1]); |
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|
347 |
final String str = tokens[2].replace('"', ' ').trim(); |
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|
348 |
final int point = Integer.parseInt(tokens[3]); |
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|
349 |
final DtoaBuffer buffer = new DtoaBuffer(BUFFER_SIZE); |
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changeset
|
350 |
|
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|
351 |
DoubleConversion.bignumDtoa(v, DtoaMode.PRECISION, digits, buffer); |
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changeset
|
352 |
assertEquals(str, trimRepresentation(buffer.getRawDigits())); |
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changeset
|
353 |
assertEquals(point, buffer.getDecimalPoint()); |
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changeset
|
354 |
}); |
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changeset
|
355 |
} |
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changeset
|
356 |
|
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|
357 |
} |