jubatus::core::storage::detail::bitcount_impl< T, 8 > Struct Template Reference

#include <bit_vector.hpp>

Collaboration diagram for jubatus::core::storage::detail::bitcount_impl< T, 8 >:

Static Public Member Functions
static int	call (T bits)

Detailed Description

template<typename T>
struct jubatus::core::storage::detail::bitcount_impl< T, 8 >

Definition at line 66 of file bit_vector.hpp.

Member Function Documentation

template<typename T >

static int jubatus::core::storage::detail::bitcount_impl< T, 8 >::call ( T  bits )

inlinestatic

Definition at line 67 of file bit_vector.hpp.

                          {
    bits = (bits & 0x5555555555555555LLU) + (bits >> 1 & 0x5555555555555555LLU);
    bits = (bits & 0x3333333333333333LLU) + (bits >> 2 & 0x3333333333333333LLU);
    bits = (bits & 0x0f0f0f0f0f0f0f0fLLU) + (bits >> 4 & 0x0f0f0f0f0f0f0f0fLLU);
    bits = (bits & 0x00ff00ff00ff00ffLLU) + (bits >> 8 & 0x00ff00ff00ff00ffLLU);
    bits = (bits & 0x0000ffff0000ffffLLU) + (bits >>16 & 0x0000ffff0000ffffLLU);
    return (bits & 0x00000000ffffffffLLU) + (bits >>32 & 0x00000000ffffffffLLU);
  }

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

• jubatus/core/storage/bit_vector.hpp