Re: RFC: Test for java.lang.StrictMath#cbrt

[Carsten Neumann <cn-develop at gmx dot net>]

	Hi,

i commited this on 2006-07-20 as

2006-07-20  Carsten Neumann  <cn-develop@gmx.net>

	* gnu/testlet/java/lang/StrictMath/cbrt.java: New test.

Carsten Neumann wrote:
> 	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.
> 
> 

Index: gnu/testlet/java/lang/StrictMath/cbrt.java
===================================================================
RCS file: gnu/testlet/java/lang/StrictMath/cbrt.java
diff -N gnu/testlet/java/lang/StrictMath/cbrt.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gnu/testlet/java/lang/StrictMath/cbrt.java	20 Jul 2006 19:16:06 -0000
@@ -0,0 +1,87 @@
+// 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
+{
+  /**
+   * These values are used as arguments to 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
+    };
+
+  /**
+   * These values are the expected results, obtained from the RI.
+   */
+  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 seems appropriate for StrictMath
+	harness.check(res, outputValues[i]);
+      }
+  }
+}