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/* toHexString.java -- test Float.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.Float;
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(Float.toHexString(Float.NaN), "NaN");
harness.check(Float.toHexString(Float.POSITIVE_INFINITY), "Infinity");
harness.check(Float.toHexString(Float.NEGATIVE_INFINITY), "-Infinity");
harness.check(Float.toHexString(0.0f), "0x0.0p0");
harness.check(Float.toHexString(-0.0f), "-0x0.0p0");
// normalized values
harness.check(Float.toHexString(0.125f), "0x1.0p-3");
harness.check(Float.toHexString(0.25f), "0x1.0p-2");
harness.check(Float.toHexString(0.5f), "0x1.0p-1");
harness.check(Float.toHexString(1.0f), "0x1.0p0");
harness.check(Float.toHexString(2.0f), "0x1.0p1");
harness.check(Float.toHexString(4.0f), "0x1.0p2");
harness.check(Float.toHexString(8.0f), "0x1.0p3");
harness.check(Float.toHexString(65536.0f), "0x1.0p16");
// 2^10
harness.check(Float.toHexString(1024.0f), "0x1.0p10");
// 2^20
harness.check(Float.toHexString(1048576.0f), "0x1.0p20");
// 2^30
harness.check(Float.toHexString(1073741824.0f), "0x1.0p30");
// subnormalized values
harness.check(Float.toHexString( Float.intBitsToFloat(0x00800000)), "0x1.0p-126");
harness.check(Float.toHexString(-Float.intBitsToFloat(0x00800000)), "-0x1.0p-126");
// max and min representable values
harness.check(Float.toHexString(Float.MAX_VALUE), "0x1.fffffep127");
harness.check(Float.toHexString(Float.MIN_VALUE), "0x0.000002p-126");
}
}
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