diff options
Diffstat (limited to 'src/nvim/macros.h')
| -rw-r--r-- | src/nvim/macros.h | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/src/nvim/macros.h b/src/nvim/macros.h index 4e01265498..e802ba2aed 100644 --- a/src/nvim/macros.h +++ b/src/nvim/macros.h @@ -136,13 +136,21 @@ # define RESET_BINDING(wp) (wp)->w_p_scb = FALSE; (wp)->w_p_crb = FALSE -/// Calculate the length of a C array. +/// Calculate the length of a C array /// /// This should be called with a real array. Calling this with a pointer is an -/// error. A mechanism to detect many (though not all) of those errors at compile -/// time is implemented. It works by the second division producing a division by -/// zero in those cases (-Wdiv-by-zero in GCC). -#define ARRAY_SIZE(arr) ((sizeof(arr)/sizeof((arr)[0])) / ((size_t)(!(sizeof(arr) % sizeof((arr)[0]))))) +/// error. A mechanism to detect many (though not all) of those errors at +/// compile time is implemented. It works by the second division producing +/// a division by zero in those cases (-Wdiv-by-zero in GCC). +#define ARRAY_SIZE(arr) \ + ((sizeof(arr)/sizeof((arr)[0])) \ + / ((size_t)(!(sizeof(arr) % sizeof((arr)[0]))))) + +/// Get last array entry +/// +/// This should be called with a real array. Calling this with a pointer is an +/// error. +#define LAST_ARRAY_ENTRY(arr) (arr)[ARRAY_SIZE(arr) - 1] // Duplicated in os/win_defs.h to avoid include-order sensitivity. #define RGB_(r, g, b) ((r << 16) | (g << 8) | b) |