YQL-16239 Move purecalc to public

1 files changed, 17 insertions, 0 deletions

diff --git a/library/cpp/microbdb/align.h b/library/cpp/microbdb/align.h
new file mode 100644
index 00000000000..2f8567f1344
--- /dev/null
+++ b/library/cpp/microbdb/align.h
@@ -0,0 +1,17 @@
+#pragma once
+
+#include <util/system/defaults.h>
+
+using TDatAlign = int;
+
+static inline size_t DatFloor(size_t size) {
+    return (size - 1) & ~(sizeof(TDatAlign) - 1);
+}
+
+static inline size_t DatCeil(size_t size) {
+    return DatFloor(size) + sizeof(TDatAlign);
+}
+
+static inline void DatSet(void* ptr, size_t size) {
+    *(TDatAlign*)((char*)ptr + DatFloor(size)) = 0;
+}