std::hash< art::EventID > Struct Template Reference

#include <EventRegistry.h>

Public Member Functions
std::size_t	operator() (art::EventID const &ID) const noexcept

Detailed Description

template<>
struct std::hash< art::EventID >

Definition at line 37 of file EventRegistry.h.

Member Function Documentation

std::size_t std::hash< art::EventID >::operator() ( art::EventID const &  ID ) const

inlinenoexcept

Definition at line 39 of file EventRegistry.h.

      {
        return std::hash<std::uint64_t>{}(
            (std::uint64_t{ ID.run() } << 40U)     // run:    24 bits (16M)
          + (std::uint64_t{ ID.subRun() } << 22U)  // subrun: 18 bits (256k)
          + (std::uint64_t{ ID.event() })          // event:  22 bits (4M)
          );
      }

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The documentation for this struct was generated from the following file:

• EventRegistry.h