test/java/lang/Double/ToHexString.java

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  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 4826774 4926547
  27  * @summary Tests for {Float, Double}.toHexString methods
  28  * @author Joseph D. Darcy
  29  */
  30 
  31 import java.util.regex.*;
  32 import sun.misc.FpUtils;
  33 import sun.misc.DoubleConsts;
  34 
  35 public class ToHexString {
  36     private ToHexString() {}
  37 
  38     /*
  39      * Given a double value, create a hexadecimal floating-point
  40      * string via an intermediate long hex string.
  41      */
  42     static String doubleToHexString(double d) {
  43         return hexLongStringtoHexDoubleString(Long.toHexString(Double.doubleToLongBits(d)));
  44     }
  45 
  46     /*
  47      * Transform the hexadecimal long output into the equivalent
  48      * hexadecimal double value.
  49      */
  50     static String hexLongStringtoHexDoubleString(String transString) {
  51         transString = transString.toLowerCase();
  52 




  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 4826774 4926547
  27  * @summary Tests for {Float, Double}.toHexString methods
  28  * @author Joseph D. Darcy
  29  */
  30 
  31 import java.util.regex.*;

  32 import sun.misc.DoubleConsts;
  33 
  34 public class ToHexString {
  35     private ToHexString() {}
  36 
  37     /*
  38      * Given a double value, create a hexadecimal floating-point
  39      * string via an intermediate long hex string.
  40      */
  41     static String doubleToHexString(double d) {
  42         return hexLongStringtoHexDoubleString(Long.toHexString(Double.doubleToLongBits(d)));
  43     }
  44 
  45     /*
  46      * Transform the hexadecimal long output into the equivalent
  47      * hexadecimal double value.
  48      */
  49     static String hexLongStringtoHexDoubleString(String transString) {
  50         transString = transString.toLowerCase();
  51