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RFC: Test for java.lang.StrictMath#cbrt
- From: Carsten Neumann <cn-develop at gmx dot net>
- To: mauve-patches at sources dot redhat dot com
- Date: Fri, 14 Jul 2006 23:00:47 +0200
- Subject: RFC: Test for java.lang.StrictMath#cbrt
Hi,
attached is a new test for the cbrt method of StrictMath.
This file should probably be placed as
gnu/testlet/java/lang/StrictMath/cbrt.java
which I can't add since I don't have write access to the cvs, hence this
is not a proper patch, just the file, sorry.
Please comment and/or commit.
Thanks,
Carsten
2006-07-14 Carsten Neumann <cn-develop@gmx.net>
* gnu/testlet/java/lang/StrictMath/cbrt.java: New test.
// Tags: JDK1.5
// Copyright (C) 2006 Carsten Neumann <cn-develop@gmx.net>
// 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, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
package gnu.testlet.java.lang.StrictMath;
import gnu.testlet.Testlet;
import gnu.testlet.TestHarness;
public class cbrt implements Testlet
{
// some values to test cbrt
private static double[] inputValues =
{
0.0,
Double.NaN,
Double.POSITIVE_INFINITY,
Double.NEGATIVE_INFINITY,
123456789e-9,
-123456789e-6,
123456789e+2,
-123456789e+4,
987654321e-7,
-987654321e-4,
987654321e+3,
-987654321e+5,
1234509876e-320, // subnormal number
9756272385e-325, // subnormal number
Math.PI,
Math.E
};
// expected output - obtained from the reference implementation
private static double[] outputValues =
{
0.0,
Double.NaN,
Double.POSITIVE_INFINITY,
Double.NEGATIVE_INFINITY,
0.49793385921817446,
-4.979338592181745,
2311.204240824796,
-10727.659796410873,
4.622408495690158,
-46.224084956901585,
9958.677214612972,
-46224.08495690158,
2.3111680380625372e-104,
9.918088333941088e-106,
1.4645918875615231,
1.3956124250860895
};
public void test(TestHarness harness)
{
double res;
for (int i = 0; i < inputValues.length; ++i)
{
res = StrictMath.cbrt(inputValues[i]);
// exact equality is appropriate for StrictMath
harness.check(res, outputValues[i]);
}
}
}