test/java/lang/Math/WorstCaseTests.java

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   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4900206
  27  * @summary Test worst case behavior of exp, log, sin, cos, etc.
  28  * @build Tests
  29  * @build WorstCaseTests
  30  * @run main WorstCaseTests
  31  * @run main/othervm -Xcomp WorstCaseTests
  32  * @author Joseph D. Darcy
  33  */
  34 
  35 /**
  36  * Use "Table Maker's Dilemma" results from Jean-Michel Muller and
  37  * Vincent Lefèvre, to test the math library.  See
  38  * http://perso.ens-lyon.fr/jean-michel.muller/TMD.html for original
  39  * test vectors from 2000 and see
  40  * http://perso.ens-lyon.fr/jean-michel.muller/TMDworstcases.pdf with
  41  * additional test vectors from 2003.  The latter link also contains
  42  * some information about the methodology used to produce the test
  43  * vectors.
  44  *
  45  * Most of the Java math library methods tested here have a 1-ulp
  46  * error bound from their specifications.  This implies the returned
  47  * value must be one of the two representable floating-point numbers
  48  * bracketing the exact result.  The expected value in the test
  49  * vectors below is the truncation of the exact value.  Therefore, the




   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4900206
  27  * @summary Test worst case behavior of exp, log, sin, cos, etc.
  28  * @library /lib/testlibrary
  29  * @build jdk.testlibrary.DoubleUtils jdk.testlibrary.FloatUtils
  30  * @run main WorstCaseTests
  31  * @run main/othervm -Xcomp WorstCaseTests
  32  * @author Joseph D. Darcy
  33  */
  34 
  35 /**
  36  * Use "Table Maker's Dilemma" results from Jean-Michel Muller and
  37  * Vincent Lefèvre, to test the math library.  See
  38  * http://perso.ens-lyon.fr/jean-michel.muller/TMD.html for original
  39  * test vectors from 2000 and see
  40  * http://perso.ens-lyon.fr/jean-michel.muller/TMDworstcases.pdf with
  41  * additional test vectors from 2003.  The latter link also contains
  42  * some information about the methodology used to produce the test
  43  * vectors.
  44  *
  45  * Most of the Java math library methods tested here have a 1-ulp
  46  * error bound from their specifications.  This implies the returned
  47  * value must be one of the two representable floating-point numbers
  48  * bracketing the exact result.  The expected value in the test
  49  * vectors below is the truncation of the exact value.  Therefore, the