/* * have_newstr - Determine if we have a system without ANSI C string functions * * Copyright (C) 1999 Landon Curt Noll * * Calc is open software; you can redistribute it and/or modify it under * the terms of the version 2.1 of the GNU Lesser General Public License * as published by the Free Software Foundation. * * Calc 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 Lesser General * Public License for more details. * * A copy of version 2.1 of the GNU Lesser General Public License is * distributed with calc under the filename COPYING-LGPL. You should have * received a copy with calc; if not, write to Free Software Foundation, Inc. * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. * * @(#) $Revision: 29.2 $ * @(#) $Id: have_newstr.c,v 29.2 2000/06/07 14:02:13 chongo Exp $ * @(#) $Source: /usr/local/src/cmd/calc/RCS/have_newstr.c,v $ * * Under source code control: 1995/05/02 03:55:08 * File existed as early as: 1995 * * chongo /\oo/\ http://www.isthe.com/chongo/ * Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/ */ /* * usage: * have_newstr * * Not all systems support all ANSI C string functions, so this may not * compile on your system. * * This prog outputs several defines: * * HAVE_NEWSTR * defined ==> use memcpy(), memset(), strchr() * undefined ==> use bcopy() instead of memcpy(), * use bfill() instead of memset(), * use index() instead of strchr() */ #include #define MOVELEN 3 char src[] = "chongo was here"; char dest[MOVELEN+1]; int main(void) { #if defined(HAVE_NO_NEWSTR) printf("#undef HAVE_NEWSTR /* no */\n"); #else /* HAVE_NO_NEWSTR */ (void) memcpy(dest, src, MOVELEN); (void) memset(dest, 0, MOVELEN); (void) strchr(src, 'e'); printf("#define HAVE_NEWSTR /* yes */\n"); #endif /* HAVE_NO_NEWSTR */ /* exit(0); */ return 0; }