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68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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* charbit - determine what CHAR_BIT is and define CALC_CHARBIT
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*
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* Copyright (C) 2021 Landon Curt Noll
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*
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* Calc is open software; you can redistribute it and/or modify it under
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* the terms of the version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* Calc is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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* Public License for more details.
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*
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* A copy of version 2.1 of the GNU Lesser General Public License is
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* distributed with calc under the filename COPYING-LGPL. You should have
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* received a copy with calc; if not, write to Free Software Foundation, Inc.
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Under source code control: 2021/12/07 20:57:50
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* File existed as early as: 2021
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*
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* chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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*/
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/*
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* usage:
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* charbit
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*
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* This prog outputs several defines:
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*
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* CALC_CHARBIT
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* after including have_limits.h and perhaps <limits.h>,
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* output CALC_CHARBIT as CHAR_BIT (from <limits.h>, or as 8.
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*/
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#include <stdio.h>
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#include "have_limits.h"
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#if defined(HAVE_LIMITS_H)
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#include <limits.h>
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#endif
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#include "banned.h" /* include after system header <> includes */
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int
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main(void)
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{
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printf("#include \"have_limits.h\"\n");
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printf("#if defined(HAVE_LIMITS_H)\n");
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printf("#include <limits.h>\n");
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printf("#endif\n\n");
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#if defined(CHAR_BIT)
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printf("#define CALC_CHARBIT (CHAR_BIT) /* from <limits.h> */\n");
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#else /* CHAR_BIT */
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printf("#define CALC_CHARBIT (8) /* no CHAR_BIT, assume 8 */\n");
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#endif /* CHAR_BIT */
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/* exit(0); */
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return 0;
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}
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