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/* toHexString.java -- test Double.toHexString
Copyright (C) 2005 Red Hat, Inc.
This file is part of Mauve.
Mauve is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
Mauve 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 for more details.
You should have received a copy of the GNU General Public License
along with Mauve; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
*/
// Tags: JDK1.5
package gnu.testlet.java.lang.Double;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
/**
* @author Tom Tromey
* @author Pavel Tisnovsky (ptisnovs at redhat dot com)
*/
public class toHexString implements Testlet {
public void test(TestHarness harness) {
// special cases
harness.check(Double.toHexString(Double.NaN), "NaN");
harness.check(Double.toHexString(Double.NEGATIVE_INFINITY), "-Infinity");
harness.check(Double.toHexString(Double.POSITIVE_INFINITY), "Infinity");
harness.check(Double.toHexString(0.0), "0x0.0p0");
harness.check(Double.toHexString(-0.0), "-0x0.0p0");
// normalized values
harness.check(Double.toHexString(0.125), "0x1.0p-3");
harness.check(Double.toHexString(0.25), "0x1.0p-2");
harness.check(Double.toHexString(0.5), "0x1.0p-1");
harness.check(Double.toHexString(1.0), "0x1.0p0");
harness.check(Double.toHexString(2.0), "0x1.0p1");
harness.check(Double.toHexString(4.0), "0x1.0p2");
harness.check(Double.toHexString(8.0), "0x1.0p3");
harness.check(Double.toHexString(65536.0), "0x1.0p16");
// 2^10
harness.check(Double.toHexString(1024.0), "0x1.0p10");
// 2^20
harness.check(Double.toHexString(1048576.0), "0x1.0p20");
// 2^30
harness.check(Double.toHexString(1073741824.0), "0x1.0p30");
// well-known problematic case
//harness.check(Double.toHexString(0.1), "0x1.999999999999ap-4");
// subnormalized values
harness.check(Double.toHexString( Double.longBitsToDouble(0x0010000000000000L)), "0x1.0p-1022");
harness.check(Double.toHexString(-Double.longBitsToDouble(0x0010000000000000L)), "-0x1.0p-1022");
// max and min representable values
harness.check(Double.toHexString( Double.MAX_VALUE), "0x1.fffffffffffffp1023");
harness.check(Double.toHexString(-Double.MAX_VALUE), "-0x1.fffffffffffffp1023");
harness.check(Double.toHexString( Double.MIN_VALUE), "0x0.0000000000001p-1022");
harness.check(Double.toHexString(-Double.MAX_VALUE), "-0x1.fffffffffffffp1023");
}
}
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