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Add stdint.h types for C89 compilers

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Add `intN_t` and `uintN_t` for N = 8, 16, 32.
This commit is contained in:
Jesse Rosenstock 2020-11-03 08:26:31 +01:00 committed by Oliver Schmidt
parent 65193c6aaf
commit b5f0c0468d
1 changed files with 45 additions and 0 deletions
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45
src/common/inttypes.h
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@ -51,6 +51,7 @@
/* Assume that ptrdiff_t and size_t are wide enough to hold pointers.
** Assume that they are the widest type.
*/
#include <limits.h>
#include <stddef.h>
typedef ptrdiff_t intptr_t;
@ -70,6 +71,50 @@ typedef size_t uintmax_t;
#define UINT16_MAX (0xFFFF)
#define UINT32_MAX (0xFFFFFFFF)
#if UCHAR_MAX == UINT8_MAX
typedef unsigned char uint8_t;
#else
#error "No suitable type for uint8_t found."
#endif
#if SCHAR_MIN == INT8_MIN && SCHAR_MAX == INT8_MAX
typedef signed char int8_t;
#else
#error "No suitable type for int8_t found."
#endif
#if UINT_MAX == UINT16_MAX
typedef unsigned int uint16_t;
#elif USHRT_MAX == UINT16_MAX
typedef unsigned short uint16_t;
#else
#error "No suitable type for uint16_t found."
#endif
#if INT_MIN == INT16_MIN && INT_MAX == INT16_MAX
typedef int int16_t;
#elif SHRT_MIN == INT16_MIN && SHRT_MAX == INT16_MAX
typedef short int16_t;
#else
#error "No suitable type for int16_t found."
#endif
#if UINT_MAX == UINT32_MAX
typedef unsigned int uint32_t;
#elif ULONG_MAX == UINT32_MAX
typedef unsigned long uint32_t;
#else
#error "No suitable type for uint32_t found."
#endif
#if INT_MIN == INT32_MIN && INT_MAX == INT32_MAX
typedef int int32_t;
#elif LONG_MIN == INT32_MIN && LONG_MAX == INT32_MAX
typedef long int32_t;
#else
#error "No suitable type for int32_t found."
#endif
#endif