intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 56 insertions, 0 deletions

diff --git a/library/cpp/int128/ut/int128_ut_helpers.cpp b/library/cpp/int128/ut/int128_ut_helpers.cpp
new file mode 100644
index 0000000000..e6c3e24d10
--- /dev/null
+++ b/library/cpp/int128/ut/int128_ut_helpers.cpp
@@ -0,0 +1,56 @@
+#include "int128_ut_helpers.h"
+
+namespace NInt128Private {
+#if defined(_little_endian_)
+    std::array<ui8, 16> GetAsArray(const ui128 value) {
+        std::array<ui8, 16> result;
+        const ui64 low = GetLow(value);
+        const ui64 high = GetHigh(value);
+        MemCopy(result.data(), reinterpret_cast<const ui8*>(&low), sizeof(low));
+        MemCopy(result.data() + sizeof(low), reinterpret_cast<const ui8*>(&high), sizeof(high));
+        return result;
+    }
+
+    std::array<ui8, 16> GetAsArray(const i128 value) {
+        std::array<ui8, 16> result;
+        const ui64 low = GetLow(value);
+        const ui64 high = GetHigh(value);
+        MemCopy(result.data(), reinterpret_cast<const ui8*>(&low), sizeof(low));
+        MemCopy(result.data() + sizeof(low), reinterpret_cast<const ui8*>(&high), sizeof(high));
+        return result;
+    }
+#elif defined(_big_endian_)
+    std::array<ui8, 16> GetAsArray(const i128 value) {
+        std::array<ui8, 16> result;
+        const ui64 low = GetLow(value);
+        const ui64 high = GetHigh(value);
+        MemCopy(result.data(), reinterpret_cast<const ui8*>(&high), sizeof(high));
+        MemCopy(result.data() + sizeof(high), reinterpret_cast<const ui8*>(&low), sizeof(low));
+        return result;
+    }
+
+    std::array<ui8, 16> GetAsArray(const ui128 value) {
+        std::array<ui8, 16> result;
+        const ui64 low = GetLow(value);
+        const ui64 high = GetHigh(value);
+        MemCopy(result.data(), reinterpret_cast<const ui8*>(&high), sizeof(high));
+        MemCopy(result.data() + sizeof(high), reinterpret_cast<const ui8*>(&low), sizeof(low));
+        return result;
+    }
+#endif
+
+#if defined(Y_HAVE_INT128)
+    std::array<ui8, 16> GetAsArray(const unsigned __int128 value) {
+        std::array<ui8, 16> result;
+        MemCopy(result.data(), reinterpret_cast<const ui8*>(&value), sizeof(value));
+        return result;
+    }
+
+    std::array<ui8, 16> GetAsArray(const signed __int128 value) {
+        std::array<ui8, 16> result;
+        MemCopy(result.data(), reinterpret_cast<const ui8*>(&value), sizeof(value));
+        return result;
+    }
+#endif
+
+}