buffer flush

1 files changed, 24 insertions, 0 deletions

diff --git a/hash.hpp b/hash.hpp
new file mode 100644
index 00000000..c6d74444
--- /dev/null
+++ b/hash.hpp
@@ -0,0 +1,24 @@
+#pragma once
+#include <cstdint>
+
+namespace Magnum::Examples {
+
+template<unsigned N = sizeof(std::size_t)*8> struct hash;
+
+template<>
+struct hash<32> final {
+    [[maybe_unused]]
+    constexpr std::uint32_t operator()(std::uint32_t x) const noexcept {
+        return (std::uint32_t)x*0x9e3779b1u;
+    }
+};
+
+template<>
+struct hash<64> final {
+    [[maybe_unused]]
+    constexpr std::uint64_t operator()(std::uint64_t x) const noexcept {
+        return x*0x9e3779b97f4a7c15ull;
+    }
+};
+
+} // namespace Magnum::Examples