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-rw-r--r--src/common/Utilities/advstd.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/src/common/Utilities/advstd.h b/src/common/Utilities/advstd.h
index 5b9991854bf..5bdfb52b533 100644
--- a/src/common/Utilities/advstd.h
+++ b/src/common/Utilities/advstd.h
@@ -18,6 +18,13 @@
#ifndef TRINITY_ADVSTD_H
#define TRINITY_ADVSTD_H
+#include <version>
+
+#ifdef __cpp_lib_bit_cast
+#include <bit>
+#else
+#include <cstring> // for memcpy
+#endif
#include <compare>
// this namespace holds implementations of upcoming stdlib features that our c++ version doesn't have yet
@@ -26,6 +33,23 @@ namespace advstd
// libc++ is missing these two
[[nodiscard]] constexpr bool is_eq(std::partial_ordering cmp) noexcept { return cmp == 0; }
[[nodiscard]] constexpr bool is_neq(std::partial_ordering cmp) noexcept { return cmp != 0; }
+
+#ifdef __cpp_lib_bit_cast
+using std::bit_cast;
+#else
+// libstdc++ v10 is missing this
+template <typename To, typename From,
+ std::enable_if_t<std::conjunction_v<
+ std::bool_constant<sizeof(To) == sizeof(From)>,
+ std::is_trivially_copyable<To>,
+ std::is_trivially_copyable<From>>, int> = 0>
+[[nodiscard]] constexpr To bit_cast(From const& from) noexcept
+{
+ To to;
+ std::memcpy(&to, &from, sizeof(To));
+ return to;
+}
+#endif
}
#endif