/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/*
* @test
* @compile Constants.java
* @bug 4397405 4826652
* @summary Testing constant-ness of Double.{MIN_VALUE, MAX_VALUE}, etc.
* @author Joseph D. Darcy
*/
public class Constants {
/*
* This compile-only test is to make sure that the primitive
* public static final fields in java.lang.Double are "constant
* expressions" as defined by "The Java Language Specification,
* 2nd edition" section 15.28; a different test checks the values
* of those fields.
*/
public static void main(String[] args) throws Exception {
int i = 0;
switch (i) {
case (int)Double.NaN: // 0
System.out.println("Double.NaN is a constant!");
break;
case (int)Double.MIN_VALUE + 1: // 0 + 1
System.out.println("Double.MIN_VALUE is a constant!");
break;
case (int)Double.MIN_NORMAL + 2: // 0 + 2
System.out.println("Double.MIN_NORMAL is a constant!");
break;
case Double.MIN_EXPONENT: // -1022
System.out.println("Double.MIN_EXPONENT is a constant!");
break;
case Double.MAX_EXPONENT: // 1023
System.out.println("Double.MAX_EXPONENT is a constant!");
break;
case (int)Double.MAX_VALUE - 1: // Integer.MAX_VALUE - 1
System.out.println("Double.MAX_VALUE is a constant!");
break;
case (int)Double.POSITIVE_INFINITY: // Integer.MAX_VALUE
System.out.println("Double.POSITIVE_INFINITY is a constant!");
break;
case (int)Double.NEGATIVE_INFINITY: // Integer.MIN_VALUE
System.out.println("Double.NEGATIVE_INFINITY is a constant!");
break;
}
}
}