Eigen::internal::random_bits_impl< Scalar > Struct Template Reference

#include <RandomImpl.h>

Public Types
using	RandomDevice = eigen_random_device
using	RandomReturnType = typename RandomDevice::ReturnType

Static Public Member Functions
static EIGEN_DEVICE_FUNC Scalar	run (int numRandomBits)

Static Public Attributes
static constexpr int	kEntropy = RandomDevice::Entropy
static constexpr int	kTotalBits = sizeof(Scalar) * CHAR_BIT

Member Typedef Documentation

RandomDevice

template<typename Scalar >

using Eigen::internal::random_bits_impl< Scalar >::RandomDevice = eigen_random_device

RandomReturnType

template<typename Scalar >

using Eigen::internal::random_bits_impl< Scalar >::RandomReturnType = typename RandomDevice::ReturnType

Member Function Documentation

run()

template<typename Scalar >

static EIGEN_DEVICE_FUNC Scalar Eigen::internal::random_bits_impl< Scalar >::run ( int  numRandomBits )

inlinestatic

                                                                {
    eigen_assert((numRandomBits >= 0) && (numRandomBits <= kTotalBits));
    const Scalar mask = Scalar(-1) >> ((kTotalBits - numRandomBits) & (kTotalBits - 1));
    Scalar randomBits = 0;
    for (int shift = 0; shift < numRandomBits; shift += kEntropy) {
      RandomReturnType r = RandomDevice::run();
      randomBits |= static_cast<Scalar>(r) << shift;
    }
    // clear the excess bits
    randomBits &= mask;
    return randomBits;
  }

References eigen_assert, Eigen::internal::random_bits_impl< Scalar >::kEntropy, Eigen::internal::random_bits_impl< Scalar >::kTotalBits, UniformPSDSelfTest::r, and Eigen::internal::eigen_random_device::run().

Referenced by Eigen::internal::getRandomBits().

Member Data Documentation

kEntropy

template<typename Scalar >

constexpr int Eigen::internal::random_bits_impl< Scalar >::kEntropy = RandomDevice::Entropy

staticconstexpr

Referenced by Eigen::internal::random_bits_impl< Scalar >::run().

kTotalBits

template<typename Scalar >

constexpr int Eigen::internal::random_bits_impl< Scalar >::kTotalBits = sizeof(Scalar) * CHAR_BIT

staticconstexpr

Referenced by Eigen::internal::random_bits_impl< Scalar >::run().

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

• RandomImpl.h