1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1994-2011 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Eclipse Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.eclipse.org/org/documents/epl-v10.html * 11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * * 19 ***********************************************************************/ 20 /* 21 * -lm test #6 22 */ 23 24 #define _ISOC99_SOURCE 1 25 26 #include <math.h> 27 28 int 29 main() 30 { 31 double value = -0.0; 32 33 return !signbit(value); 34 } 35