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author Spartan322 <Megacake1234@gmail.com>2023-11-28 11:09:26 +0100
committer Spartan322 <Megacake1234@gmail.com>2024-05-09 22:11:26 +0200
commit757114a3c5b748567b42f273c7b78ca039ae983c (patch)
treee07390b682052129c91f4b157068bcdd84ceecb4 /include/openvic-dataloader/detail/utility/PointerHash.hpp
parent7211a228e68c8a6b1ad1c1c5ec68c8d720b6d2ba (diff)
Add `deps/dryad` -> https://github.com/Spartan322/dryadadd/dryad
Add `deps/fmt` -> https://github.com/fmtlib/fmt Add `deps/range-v3` -> https://github.com/ericniebler/range-v3 Improve parser error and warning support Update .clang-format Update `deps/SCsub`
Diffstat (limited to 'include/openvic-dataloader/detail/utility/PointerHash.hpp')
-rw-r--r--include/openvic-dataloader/detail/utility/PointerHash.hpp23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/openvic-dataloader/detail/utility/PointerHash.hpp b/include/openvic-dataloader/detail/utility/PointerHash.hpp
new file mode 100644
index 0000000..c0d28bc
--- /dev/null
+++ b/include/openvic-dataloader/detail/utility/PointerHash.hpp
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <cstdint>
+
+namespace ovdl::detail {
+ /* hash any pointer */
+ template<typename T>
+ struct PointerHash {
+ using type = T;
+ using ptr_type = T*;
+ using const_type = const T;
+ using const_ptr_type = const T*;
+ using const_ptr_const_type = const const_ptr_type;
+ constexpr std::size_t operator()(const_ptr_const_type pointer) const {
+ auto addr = reinterpret_cast<uintptr_t>(pointer);
+#if SIZE_MAX < UINTPTR_MAX
+ /* size_t is not large enough to hold the pointer’s memory address */
+ addr %= SIZE_MAX; /* truncate the address so it is small enough to fit in a size_t */
+#endif
+ return addr;
+ }
+ };
+} \ No newline at end of file