folly::detail::float_hasher< F > Struct Template Reference

#include <Hash.h>

Public Types
using	folly_is_avalanching = std::true_type

Public Member Functions
size_t	operator() (F const &f) const noexcept

Detailed Description

template<typename F>
struct folly::detail::float_hasher< F >

Definition at line 339 of file Hash.h.

Member Typedef Documentation

template<typename F>

using folly::detail::float_hasher< F >::folly_is_avalanching = std::true_type

Definition at line 340 of file Hash.h.

Member Function Documentation

template<typename F>

size_t folly::detail::float_hasher< F >::operator() ( F const &  f ) const

inlinenoexcept

Definition at line 342 of file Hash.h.

                                               {
    static_assert(sizeof(F) <= 8, "Input type is too wide");

    if (f == F{}) { // Ensure 0 and -0 get the same hash.
      return 0;
    }

    uint64_t u64 = 0;
    memcpy(&u64, &f, sizeof(F));
    return static_cast<size_t>(hash::twang_mix64(u64));
  }

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

• proxygen/folly/folly/hash/Hash.h