llfio_v2_xxx::fast_random_file_handle::prng Struct Reference

Inheritance diagram for llfio_v2_xxx::fast_random_file_handle::prng:

Public Types
using	_base = QUICKCPPLIB_NAMESPACE::algorithm::small_prng::small_prng

Public Member Functions
	prng (span< const byte > seed) noexcept
_base::value_type	operator() (extent_type offset) noexcept

Constructor & Destructor Documentation

prng()

llfio_v2_xxx::fast_random_file_handle::prng::prng ( span< const byte >  seed )

inlineexplicitnoexcept

    {
      a = 0xf1ea5eed;
      b = c = d = 0xdeadbeef;
      memcpy(&a, seed.data(), std::min(seed.size(), sizeof(*this)));
      for(size_t i = 0; i < 20; ++i)
        _base::operator()();
    }

Member Function Documentation

operator()()

_base::value_type llfio_v2_xxx::fast_random_file_handle::prng::operator() ( extent_type  offset )

inlinenoexcept

    {
      a = offset & 0xffffffff;
      b = (offset >> 32) & 0xffffffff;
      return _base::operator()();
    }

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

• include/llfio/v2.0/fast_random_file_handle.hpp