update

1 files changed, 28 insertions, 0 deletions

diff --git a/include/util.h b/include/util.h
new file mode 100644
index 0000000..a3bdcce
--- /dev/null
+++ b/include/util.h
@@ -0,0 +1,28 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <stddef.h>
+
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define LEN(arr)  (sizeof(arr) / sizeof((arr)[0]))
+#define BIT(n)    (1 << (n))
+
+// NOLINTBEGIN(bugprone-macro-parentheses)
+#define MEMBER_SIZE(type, member) sizeof(((type*)NULL)->member)
+#define MEMBER_LENGTH(type, member) \
+    (MEMBER_SIZE(type, member) / MEMBER_SIZE(type, member[0]))
+// NOLINTEND(bugprone-macro-parentheses)
+
+#define UTF8_MAX_BYTE_COUNT 4
+
+enum pipe_fd_index {
+    READ_END,
+    WRITE_END,
+    PIPE_FD_COUNT,
+};
+
+unsigned int gcd(unsigned int a, unsigned int b);
+size_t truncate_utf8_string(char* const buffer, const size_t size,
+                            const size_t char_limit);
+
+#endif  // UTIL_H