--- /dev/null Mon Jan 26 16:11:47 2009 +++ new/test/java/lang/Float/Constants.java Mon Jan 26 16:11:45 2009 @@ -0,0 +1,69 @@ +/* + * Copyright 2001-2005 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * 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). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + */ + +/* + * @test + * @compile Constants.java + * @bug 4397405 4826652 + * @summary Testing constant-ness of Float.{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.Float 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)Float.NaN: // 0 + System.out.println("Float.NaN is a constant!"); + break; + case (int)Float.MIN_VALUE + 1: // 0 + 1 + System.out.println("Float.MIN_VALUE is a constant!"); + break; + case (int)Float.MIN_NORMAL + 2: // 0 + 2 + System.out.println("Float.MIN_NORMAL is a constant!"); + break; + case Float.MIN_EXPONENT: // -126 + System.out.println("Float.MIN_EXPONENT is a constant!"); + break; + case Float.MAX_EXPONENT: // 127 + System.out.println("Float.MAX_EXPONENT is a constant!"); + break; + case (int)Float.MAX_VALUE - 1: // Integer.MAX_VALUE - 1 + System.out.println("Float.MAX_VALUE is a constant!"); + break; + case (int)Float.POSITIVE_INFINITY: // Integer.MAX_VALUE + System.out.println("Float.POSITIVE_INFINITY is a constant!"); + break; + case (int)Float.NEGATIVE_INFINITY: // Integer.MIN_VALUE + System.out.println("Float.NEGATIVE_INFINITY is a constant!"); + break; + } + } +}