mirror of
https://github.com/lcn2/calc.git
synced 2025-08-16 01:03:29 +03:00
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/*
|
|
* 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.
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* @(#) $Revision: 30.1 $
|
|
* @(#) $Id: have_newstr.c,v 30.1 2007/03/16 11:09:46 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 <was here> /\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 <stdio.h>
|
|
|
|
#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;
|
|
}
|