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216 lines
5.0 KiB
C
216 lines
5.0 KiB
C
/*
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* int - integer types and integer macros used in calc
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*
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* For general information on C integers, see:
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*
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* https://en.cppreference.com/w/c/language/arithmetic_types
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* https://en.cppreference.com/w/c/types/integer
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*
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* Copyright (C) 2023 Landon Curt Noll
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*
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* Primary author: 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: 2023/08/22 21:14:25
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* File existed as early as: 2023
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*
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* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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*/
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#if !defined(INCLUDE_INT_H)
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#define INCLUDE_INT_H
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/*
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* important include files that have an impact in integer types used in calc
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*/
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#include "have_stdint.h"
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#if defined(HAVE_STDINT_H)
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#include <stdint.h>
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#endif /* HAVE_STDINT_H */
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#include "have_inttypes.h"
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#if defined(HAVE_INTTYPES_H)
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#include <inttypes.h>
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#endif /* HAVE_INTTYPES_H */
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#include "status.chk_c.h"
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#include "bool.h"
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#include "charbit.h"
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#include "version.h"
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/*
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* case: C compiler and select include files appear to meet calc requirements
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*/
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#if defined(CHK_C)
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/*
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* bit width of various signed integers
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*
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* These are standard for c23 or later.
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* Compute them for earlier compiler standards.
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*/
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#if !defined(INT8_WIDTH)
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#define INT8_WIDTH (sizeof(int8_t) * CALC_CHARBIT)
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#endif /* INT8_WIDTH */
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#if !defined(INT16_WIDTH)
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#define INT16_WIDTH (sizeof(int16_t) * CALC_CHARBIT)
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#endif /* INT16_WIDTH */
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#if !defined(INT32_WIDTH)
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#define INT32_WIDTH (sizeof(int32_t) * CALC_CHARBIT)
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#endif /* INT32_WIDTH */
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#if !defined(INT64_WIDTH)
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#define INT64_WIDTH (sizeof(int64_t) * CALC_CHARBIT)
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#endif /* INT64_WIDTH */
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#if !defined(INTPTR_WIDTH)
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#define INTPTR_WIDTH (sizeof(intptr_t) * CALC_CHARBIT)
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#endif /* INTPTR_WIDTH */
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#if !defined(INTMAX_WIDTH)
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#define INTMAX_WIDTH (sizeof(intmax_t) * CALC_CHARBIT)
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#endif /* INTMAX_WIDTH */
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/*
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* bit width of various unsigned integers
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*
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* These are standard for c23 or later.
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* Compute them for earlier compiler standards.
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*/
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#if !defined(UINT8_WIDTH)
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#define UINT8_WIDTH (sizeof(uint8_t) * CALC_CHARBIT)
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#endif /* UINT8_WIDTH */
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#if !defined(UINT16_WIDTH)
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#define UINT16_WIDTH (sizeof(uint16_t) * CALC_CHARBIT)
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#endif /* UINT16_WIDTH */
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#if !defined(UINT32_WIDTH)
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#define UINT32_WIDTH (sizeof(uint32_t) * CALC_CHARBIT)
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#endif /* UINT32_WIDTH */
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#if !defined(UINT64_WIDTH)
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#define UINT64_WIDTH (sizeof(uint64_t) * CALC_CHARBIT)
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#endif /* UINT64_WIDTH */
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#if !defined(UINTPTR_WIDTH)
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#define UINTPTR_WIDTH (sizeof(uintptr_t) * CALC_CHARBIT)
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#endif /* UINTPTR_WIDTH */
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#if !defined(UINTMAX_WIDTH)
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#define UINTMAX_WIDTH (sizeof(uintmax_t) * CALC_CHARBIT)
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#endif /* UINTMAX_WIDTH */
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/*
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* case: C compiler and/or select include files do not meet calc requirements
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*/
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#else /* CHK_C */
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/*
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* calc v2 is the last version where one might be able to use an old C compiler
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* and/or tolerate missing include files
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*/
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#if MAJOR_VER < 3
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/*
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* bit width of various signed integers
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*
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* These are standard for c23 or later.
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* Compute them for earlier compiler standards.
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*/
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#if !defined(INT8_WIDTH)
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#define INT8_WIDTH (8)
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#endif /* INT8_WIDTH */
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#if !defined(INT16_WIDTH)
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#define INT16_WIDTH (16)
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#endif /* INT16_WIDTH */
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#if !defined(INT32_WIDTH)
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#define INT32_WIDTH (32)
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#endif /* INT32_WIDTH */
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#if !defined(INT64_WIDTH)
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#define INT64_WIDTH (64)
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#endif /* INT64_WIDTH */
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#if !defined(INTPTR_WIDTH)
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#define INTPTR_WIDTH (64)
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#endif /* INTPTR_WIDTH */
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#if !defined(INTMAX_WIDTH)
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#define INTMAX_WIDTH (64)
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#endif /* INTMAX_WIDTH */
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/*
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* bit width of various unsigned integers
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*
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* These are standard for c23 or later.
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* Compute them for earlier compiler standards.
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*/
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#if !defined(UINT8_WIDTH)
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#define UINT8_WIDTH (8)
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#endif /* UINT8_WIDTH */
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#if !defined(UINT16_WIDTH)
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#define UINT16_WIDTH (16)
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#endif /* UINT16_WIDTH */
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#if !defined(UINT32_WIDTH)
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#define UINT32_WIDTH (32)
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#endif /* UINT32_WIDTH */
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#if !defined(UINT64_WIDTH)
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#define UINT64_WIDTH (64)
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#endif /* UINT64_WIDTH */
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#if !defined(UINTPTR_WIDTH)
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#define UINTPTR_WIDTH (64)
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#endif /* UINTPTR_WIDTH */
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#if !defined(UINTMAX_WIDTH)
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#define UINTMAX_WIDTH (64)
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#endif /* UINTMAX_WIDTH */
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#else /* MAJOR_VER < 3 */
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/*
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* calc v3 or later and CHK_C is undefined
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*/
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#pragma GCC error "calc v3 and later require C compiler and include files that support CHK_C"
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#endif /* MAJOR_VER < 3 */
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#endif /* CHK_C */
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#endif /* !INCLUDE_INT_H */
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