/****************************************************************************** Copyright (c) 1992, 1995, 1996 Xerox Corporation. All rights reserved. Portions of this code were written by Stephen White, aka ghond. Use and copying of this software and preparation of derivative works based upon this software are permitted. Any distribution of this software or derivative works must comply with all applicable United States export control laws. This software is made available AS IS, and Xerox Corporation makes no warranty about the software, its performance or its conformity to any specification. Any person obtaining a copy of this software is requested to send their name and post office or electronic mail address to: Pavel Curtis Xerox PARC 3333 Coyote Hill Rd. Palo Alto, CA 94304 Pavel@Xerox.Com *****************************************************************************/ #ifndef Math_h #define Math_h 1 #include <float.h> #include <math.h> #define IS_REAL(x) (-DBL_MAX <= (x) && (x) <= DBL_MAX) #endif /* $Log: my-math.h,v $ * Revision 2.2 1996/03/10 01:06:01 pavel * Replaced HUGE_VAL with DBL_MAX, since some systems (e.g., BSDi 1.1) * mis-define the former as positive infinity. Release 1.8.0. * * Revision 2.1 1996/02/08 06:04:22 pavel * Updated copyright notice for 1996. Added inclusion of <math.h> for all of * the standard math functions. Added IS_REAL() check for NaNs and * infinities. Release 1.8.0beta1. * * Revision 2.0 1995/11/30 05:15:40 pavel * New baseline version, corresponding to release 1.8.0alpha1. */