diff options
Diffstat (limited to 'src/common/arrutil.h')
| -rw-r--r-- | src/common/arrutil.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/common/arrutil.h b/src/common/arrutil.h new file mode 100644 index 0000000..83a49d6 --- /dev/null +++ b/src/common/arrutil.h @@ -0,0 +1,16 @@ +#pragma once + +#include <assert.h> + +#ifdef __has_builtin + #if !__cplusplus && FF_SUPPORTS_COUNT_OF + #define ARRAY_SIZE(x) _Countof(x) + #elif __has_builtin(__is_array) + #define ARRAY_SIZE(x) ({ static_assert(__is_array(__typeof__(x)), "Must be an array"); (uint32_t) (sizeof(x) / sizeof(*(x))); }) + #elif __has_builtin(__builtin_types_compatible_p) + #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))); }) + #endif +#endif +#ifndef ARRAY_SIZE + #define ARRAY_SIZE(x) ((uint32_t) (sizeof(x) / sizeof(*(x)))) +#endif |