Steve Karg
106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
/**
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* @file
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* @author Steve Karg <skarg@users.sourceforge.net>
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* @date 2022
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* @brief Platform libc and compiler abstraction layer
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* @details This libc and compiler abstraction layer assists with differences
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* between compiler and libc versions, capabilities, and C standards.
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* @copyright SPDX-License-Identifier: MIT
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*/
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#ifndef BACNET_SYS_PLATFORM_H
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#define BACNET_SYS_PLATFORM_H
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#include <stddef.h>
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#include <string.h>
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#include <limits.h>
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#include <math.h>
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#ifndef INT_MAX
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#define INT_MAX (~0U >> 1U)
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#endif
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#ifndef islessgreater
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#define islessgreater(x, y) ((x) < (y) || (x) > (y))
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#endif
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#ifndef isgreaterequal
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#define isgreaterequal(x, y) ((x) > (y) || !islessgreater((x), (y)))
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#endif
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#ifndef islessequal
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#define islessequal(x, y) ((x) < (y) || !islessgreater((x), (y)))
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#endif
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(array) ((size_t)(sizeof(array) / sizeof((array)[0])))
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#endif
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/* marking some code as 'deprecated' */
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#if defined(BACNET_STACK_DEPRECATED_DISABLE)
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#define BACNET_STACK_DEPRECATED(message)
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#elif defined(_MSC_VER)
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#define BACNET_STACK_DEPRECATED(message) __declspec(deprecated(message))
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#elif defined(__GNUC__)
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#define BACNET_STACK_DEPRECATED(message) __attribute__((deprecated(message)))
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#else
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#define BACNET_STACK_DEPRECATED(message)
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#endif
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#if defined(_MSC_VER)
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#ifndef __inline__
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#define __inline__ __inline
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#endif
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#if (_MSC_VER < 1900)
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#include <stdio.h>
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#include <stdarg.h>
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#define snprintf c99_snprintf
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#define vsnprintf c99_vsnprintf
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__inline int
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c99_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap)
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{
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int count = -1;
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if (size != 0) {
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count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap);
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}
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if (count == -1) {
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count = _vscprintf(format, ap);
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}
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return count;
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}
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__inline int c99_snprintf(char *outBuf, size_t size, const char *format, ...)
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{
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int count;
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va_list ap;
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va_start(ap, format);
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count = c99_vsnprintf(outBuf, size, format, ap);
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va_end(ap);
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return count;
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}
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#endif
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#endif
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/* some common min/max as defined in windef.h */
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#ifndef NOMINMAX
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#ifndef max
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#define max(a, b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifndef min
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#define min(a, b) (((a) < (b)) ? (a) : (b))
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#endif
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#endif /* NOMINMAX */
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#if defined(__MINGW32__)
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#define BACNET_STACK_FALLTHROUGH() /* fall through */
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#elif defined(__GNUC__)
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#define BACNET_STACK_FALLTHROUGH() __attribute__((fallthrough))
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#else
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#define BACNET_STACK_FALLTHROUGH() /* fall through */
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#endif
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#endif
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