1 files changed, 26 insertions, 0 deletions
diff --git a/2022/util.h b/2022/util.h
new file mode 100644
index 0000000..4bc6c2e
--- /dev/null
+++ b/2022/util.h
@@ -0,0 +1,26 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <stdint.h>
+
+#define NULL ((void *)0)
+#define LEN(arr) (sizeof arr / sizeof arr[0])
+#define BIT(b) (1UL << b)
+
+typedef int8_t s8;
+typedef uint8_t u8;
+
+typedef int16_t s16;
+typedef uint16_t u16;
+
+typedef int32_t s32;
+typedef uint32_t u32;
+
+typedef int64_t s64;
+typedef uint64_t u64;
+
+typedef float f32;
+typedef double f64;
+
+#endif /* UTIL_H */
+