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李通洲
17 lines
660 B
C
17 lines
660 B
C
#pragma once
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#include <assert.h>
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#ifdef __has_builtin
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#if !__cplusplus && FF_SUPPORTS_COUNT_OF
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#define ARRAY_SIZE(x) _Countof(x)
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#elif __has_builtin(__is_array)
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#define ARRAY_SIZE(x) ({ static_assert(__is_array(__typeof__(x)), "Must be an array"); (uint32_t) (sizeof(x) / sizeof(*(x))); })
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#elif __has_builtin(__builtin_types_compatible_p)
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#define ARRAY_SIZE(x) ({ static_assert(!__builtin_types_compatible_p(__typeof__(x), __typeof__(&*(x))), "Must not be a pointer"); (uint32_t) (sizeof(x) / sizeof(*(x))); })
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#endif
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#endif
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(x) ((uint32_t) (sizeof(x) / sizeof(*(x))))
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#endif
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