codedump: paper-stdint.h comparison

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author	Paper <paper@tflc.us>
date	Mon, 17 Nov 2025 21:40:24 -0500
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+:35580b661882
+/* paper-stdint.h -- replacement stdint.h that does as much as it can
+* without outside help
+*
+* Copyright (C) 2025 Paper
+*
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held liable for any damages
+* arising from the use of this software.
+*
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+*
+* 1. The origin of this software must not be misrepresented; you must not
+*    claim that you wrote the original software. If you use this software
+*    in a product, an acknowledgment in the product documentation would be
+*    appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+*    misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+*/
+/**
+* This is a drop-in replacement stdint.h that provides a
+* subset of the features that the C99 equivalent provides.
+*
+* There are some caveats:
+*  - [u]intptr_t is not here. There's no way to do it portably.
+*    Thus INTPTR_MAX and friends are not here either. It may
+*    be possible to do it with __LP64__ or something, but that
+*    really isn't portable either :(
+*  - ptrdiff_t is not here.
+*  - int64_t relies on platform-specific extensions, or C99
+*    long long. Add your platform for funsies!
+*  - SIZE_MAX cannot be done portably. The closest thing we have
+*    is (~(size_t)0), which does not work in preprocessor
+*    expressions.
+*  - WINT_MIN cannot be done portably, nor can WCHAR_MIN,
+*    WINT_MAX, or WCHAR_MAX.
+*  - I have not implemented scanf specifiers. I don't use
+*    them, and neither should you. (the real reason is that
+*    "%hhd" was only added in C99).
+*
+* Maybe there's just something I missed. As far as I know
+* these are impossible to do without compiler-specific
+* extensions.  --paper
+**/
+#ifndef PAPER_STDINT_H_
+#define PAPER_STDINT_H_
+/* need limits.h for INT_MIN etc */
+#include <limits.h>
+#define INT8_MAX 0x7F
+#define INT8_MIN (-INT8_MAX - 1)
+#define INT16_MAX 0x7FFF
+#define INT16_MIN (-INT16_MAX - 1)
+#define INT32_MAX 0x7FFFFFFF
+#define INT32_MIN (-INT32_MAX - 1)
+#define INT64_MAX 0x7FFFFFFFFFFFFFFF
+#define INT64_MIN (-INT64_MAX - 1)
+#define UINT8_MAX 0xFFu
+#define UINT16_MAX 0xFFFFu
+#define UINT32_MAX 0xFFFFFFFFu
+#define UINT64_MAX 0xFFFFFFFFFFFFFFFFu
+/* ?? */
+#ifndef SIZE_MAX
+# define SIZE_MAX (~(size_t)0)
+#endif
+#if UCHAR_MAX == UINT8_MAX
+typedef unsigned char uint8_t;
+# define PRIu8 "u"
+# define PRIo8 "o"
+# define PRIx8 "x"
+# define PRIX8 "X"
+# define UINT8_C(x) x ## U
+#else
+# error "no unsigned 8-bit type"
+#endif
+#if UCHAR_MAX == UINT16_MAX
+typedef unsigned char uint16_t;
+# define PRIu16 "u"
+# define PRIo16 "o"
+# define PRIx16 "x"
+# define PRIX16 "X"
+# define UINT16_C(x) x ## U
+#elif USHRT_MAX == UINT16_MAX
+typedef unsigned short uint16_t;
+# define PRIu16 "u"
+# define PRIo16 "o"
+# define PRIx16 "x"
+# define PRIX16 "X"
+# define UINT16_C(x) x ## U
+#elif UINT_MAX == UINT16_MAX
+typedef unsigned int uint16_t;
+# define PRIu16 "u"
+# define PRIo16 "o"
+# define PRIx16 "x"
+# define PRIX16 "X"
+# define UINT16_C(x) x ## U
+#else
+# error "no unsigned 16-bit type"
+#endif
+#if UCHAR_MAX == UINT32_MAX
+typedef unsigned char uint32_t;
+# define PRIu32 "u"
+# define PRIo32 "o"
+# define PRIx32 "x"
+# define PRIX32 "X"
+# define UINT32_C(x) x ## U
+#elif USHRT_MAX == UINT32_MAX
+typedef unsigned short uint32_t;
+# define PRIu32 "u"
+# define PRIo32 "o"
+# define PRIx32 "x"
+# define PRIX32 "X"
+# define UINT32_C(x) x ## U
+#elif UINT_MAX == UINT32_MAX
+typedef unsigned int uint32_t;
+# define PRIu32 "u"
+# define PRIo32 "o"
+# define PRIx32 "x"
+# define PRIX32 "X"
+# define UINT32_C(x) x ## U
+#elif ULONG_MAX == UINT32_MAX
+typedef unsigned long uint32_t;
+# define PRIu32 "lu"
+# define PRIo32 "lo"
+# define PRIx32 "lx"
+# define PRIX32 "lX"
+# define UINT32_C(x) x ## UL
+#else
+# error "no unsigned 32-bit type"
+#endif
+#if UCHAR_MAX == UINT64_MAX
+typedef unsigned char uint64_t;
+# define PRIu64 "u"
+# define PRIo64 "o"
+# define PRIx64 "x"
+# define PRIX64 "X"
+# define UINT64_C(x) x ## U
+#elif USHRT_MAX == UINT64_MAX
+typedef unsigned short uint64_t;
+# define PRIu64 "u"
+# define PRIo64 "o"
+# define PRIx64 "x"
+# define PRIX64 "X"
+# define UINT64_C(x) x ## U
+#elif UINT_MAX == UINT64_MAX
+typedef unsigned int uint64_t;
+# define PRIu64 "u"
+# define PRIo64 "o"
+# define PRIx64 "x"
+# define PRIX64 "X"
+# define UINT64_C(x) x ## U
+#elif ULONG_MAX == UINT64_MAX
+typedef unsigned long uint64_t;
+# define PRIu64 "lu"
+# define PRIo64 "lo"
+# define PRIx64 "lx"
+# define PRIX64 "lX"
+# define UINT64_C(x) x ## UL
+#elif defined(_MSC_VER)
+typedef unsigned __int64 uint64_t;
+# define PRIu64 "I64u"
+# define PRIo64 "I64o"
+# define PRIx64 "I64x"
+# define PRIX64 "I64X"
+# define UINT64_C(x) x ## Ui64
+#elif ULLONG_MAX == UINT64_MAX
+/* C99 */
+typedef unsigned long long uint64_t;
+# define PRIu64 "llu"
+# define PRIo64 "llo"
+# define PRIx64 "llx"
+# define PRIX64 "llX"
+# define UINT64_C(x) x ## ULL
+#else
+# error "no unsigned 64-bit type"
+#endif
+#if SCHAR_MIN == INT8_MIN && SCHAR_MAX == INT8_MAX
+typedef signed char int8_t;
+# define PRId8 "d"
+# define INT8_C(x) x
+#else
+# error "no signed 8-bit type"
+#endif
+#if SCHAR_MIN == INT16_MIN && SCHAR_MAX == INT16_MAX
+typedef signed char int16_t;
+# define PRId16 "d"
+# define INT16_C(x) x
+#elif SHRT_MIN == INT16_MIN && SHRT_MAX == INT16_MAX
+typedef signed short int16_t;
+# define PRId16 "d"
+# define INT16_C(x) x
+#elif INT_MIN == INT16_MIN && INT_MAX == INT16_MAX
+typedef signed int int16_t;
+# define PRId16 "d"
+# define INT16_C(x) x
+#else
+# error "no signed 16-bit type"
+#endif
+#if SCHAR_MIN == INT32_MIN && SCHAR_MAX == INT32_MAX
+typedef signed char int32_t;
+# define PRId32 "d"
+# define INT32_C(x) x
+#elif SHRT_MIN == INT32_MIN && SHRT_MAX == INT32_MAX
+typedef signed short int32_t;
+# define PRId32 "d"
+# define INT32_C(x) x
+#elif INT_MIN == INT32_MIN && INT_MAX == INT32_MAX
+typedef signed int int32_t;
+# define PRId32 "d"
+# define INT32_C(x) x
+#elif LONG_MIN == INT32_MIN && LONG_MAX == INT32_MAX
+typedef signed long int32_t;
+# define PRId32 "ld"
+# define INT32_C(x) x ## L
+#else
+# error "no signed 32-bit type"
+#endif
+#if SCHAR_MIN == INT64_MIN && SCHAR_MAX == INT64_MAX
+typedef signed char int64_t;
+# define PRId64 "d"
+# define INT64_C(x) x
+#elif SHRT_MIN == INT64_MIN && SHRT_MAX == INT64_MAX
+typedef signed short int64_t;
+# define PRId64 "d"
+# define INT64_C(x) x
+#elif INT_MIN == INT64_MIN && INT_MAX == INT64_MAX
+typedef signed int int64_t;
+# define PRId64 "d"
+# define INT64_C(x) x
+#elif LONG_MIN == INT64_MIN && LONG_MAX == INT64_MAX
+typedef signed long int64_t;
+# define PRId64 "ld"
+# define INT64_C(x) x ## L
+#elif defined(_MSC_VER)
+typedef signed __int64 int64_t;
+# define PRId64 "I64d"
+# define INT64_C(x) x ## i64
+#elif LLONG_MIN == INT64_MIN && LLONG_MAX == INT64_MAX
+typedef signed long long int64_t;
+# define PRId64 "lld"
+# define INT64_C(x) x ## LL
+#else
+# error "no signed 64-bit type"
+#endif
+#define PRIi8  PRId8
+#define PRIi16 PRId16
+#define PRIi32 PRId32
+#define PRIi64 PRId64
+/* -------------------------------------------------------------------------------- */
+/* least types */
+typedef int8_t int_least8_t;
+typedef int16_t int_least16_t;
+typedef int32_t int_least32_t;
+typedef int64_t int_least64_t;
+#define INT_LEAST8_MIN INT8_MIN
+#define INT_LEAST8_MAX INT8_MAX
+#define INT_LEAST16_MIN INT16_MIN
+#define INT_LEAST16_MAX INT16_MAX
+#define INT_LEAST32_MIN INT32_MIN
+#define INT_LEAST32_MAX INT32_MAX
+#define INT_LEAST64_MIN INT64_MIN
+#define INT_LEAST64_MAX INT64_MAX
+#define PRIdLEAST8  PRId8
+#define PRIdLEAST16 PRId16
+#define PRIdLEAST32 PRId32
+#define PRIdLEAST64 PRId64
+#define PRIxLEAST8  PRIx8
+#define PRIxLEAST16 PRIx16
+#define PRIxLEAST32 PRIx32
+#define PRIxLEAST64 PRIx64
+#define PRIoLEAST8  PRIo8
+#define PRIoLEAST16 PRIo16
+#define PRIoLEAST32 PRIo32
+#define PRIoLEAST64 PRIo64
+#define PRIiLEAST8  PRIi8
+#define PRIiLEAST16 PRIi16
+#define PRIiLEAST32 PRIi32
+#define PRIiLEAST64 PRIi64
+#define PRIXLEAST8  PRIX8
+#define PRIXLEAST16 PRIX16
+#define PRIXLEAST32 PRIX32
+#define PRIXLEAST64 PRIX64
+#define PRIuLEAST8  PRIu8
+#define PRIuLEAST16 PRIu16
+#define PRIuLEAST32 PRIu32
+#define PRIuLEAST64 PRIu64
+/* -------------------------------------------------------------------------------- */
+/* fast types */
+typedef int8_t int_fast8_t;
+typedef int16_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef int64_t int_fast64_t;
+#define INT_FAST8_MIN INT8_MIN
+#define INT_FAST8_MAX INT8_MAX
+#define INT_FAST16_MIN INT16_MIN
+#define INT_FAST16_MAX INT16_MAX
+#define INT_FAST32_MIN INT32_MIN
+#define INT_FAST32_MAX INT32_MAX
+#define INT_FAST64_MIN INT64_MIN
+#define INT_FAST64_MAX INT64_MAX
+#define PRIdFAST8  PRId8
+#define PRIdFAST16 PRId16
+#define PRIdFAST32 PRId32
+#define PRIdFAST64 PRId64
+#define PRIxFAST8  PRIx8
+#define PRIxFAST16 PRIx16
+#define PRIxFAST32 PRIx32
+#define PRIxFAST64 PRIx64
+#define PRIoFAST8  PRIo8
+#define PRIoFAST16 PRIo16
+#define PRIoFAST32 PRIo32
+#define PRIoFAST64 PRIo64
+#define PRIiFAST8  PRIi8
+#define PRIiFAST16 PRIi16
+#define PRIiFAST32 PRIi32
+#define PRIiFAST64 PRIi64
+#define PRIXFAST8  PRIX8
+#define PRIXFAST16 PRIX16
+#define PRIXFAST32 PRIX32
+#define PRIXFAST64 PRIX64
+#define PRIuFAST8  PRIu8
+#define PRIuFAST16 PRIu16
+#define PRIuFAST32 PRIu32
+#define PRIuFAST64 PRIu64
+/* -------------------------------------------------------------------------------- */
+/* [u]intmax_t -- this is hardcoded to 64-bit, beware! */
+typedef int64_t intmax_t;
+typedef uint64_t uintmax_t;
+#define INTMAX_MIN INT64_MIN
+#define INTMAX_MAX INT64_MAX
+#define UINTMAX_MAX UINT64_MAX
+#define PRIdMAX PRId64
+#define PRIuMAX PRIu64
+#define PRIxMAX PRIx64
+#define PRIXMAX PRIX64
+#define PRIoMAX PRIo64
+#define PRIiMAX PRIi64
+#define INTMAX_C(x) INT64_C(x)
+#endif /* PAPER_STDINT_H_ */

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comparison paper-stdint.h @ 131:35580b661882 default tip