diff options
Diffstat (limited to 'ccan/alignof/_info')
| -rw-r--r-- | ccan/alignof/_info | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/ccan/alignof/_info b/ccan/alignof/_info deleted file mode 100644 index ee2b7ad..0000000 --- a/ccan/alignof/_info +++ /dev/null @@ -1,51 +0,0 @@ -#include "config.h" -#include <stdio.h> -#include <string.h> - -/** - * alignof - ALIGNOF() macro to determine alignment of a type. - * - * Many platforms have requirements that certain types must be aligned - * to certain address boundaries, such as ints needing to be on 4-byte - * boundaries. Attempting to access variables with incorrect - * alignment may cause performance loss or even program failure (eg. a - * bus signal). - * - * There are times which it's useful to be able to programatically - * access these requirements, such as for dynamic allocators. - * - * Example: - * #include <stdio.h> - * #include <stdlib.h> - * #include <ccan/alignof/alignof.h> - * - * // Output contains "ALIGNOF(char) == 1" - * // Will also print out whether an onstack char array can hold a long. - * int main(void) - * { - * char arr[sizeof(int)]; - * - * printf("ALIGNOF(char) == %zu\n", ALIGNOF(char)); - * if ((unsigned long)arr % ALIGNOF(int)) { - * printf("arr %p CANNOT hold an int\n", arr); - * exit(1); - * } else { - * printf("arr %p CAN hold an int\n", arr); - * exit(0); - * } - * } - * - * License: CC0 (Public domain) - * Author: Rusty Russell <rusty@rustcorp.com.au> - */ -int main(int argc, char *argv[]) -{ - if (argc != 2) - return 1; - - if (strcmp(argv[1], "depends") == 0) { - return 0; - } - - return 1; -} |
