mrg32k3a#

Description#

The combined multiple recursive pseudorandom number generator MRG32k3a [L’Ecuyer99a].

API#

Syntax#

namespace oneapi::mkl::rng::device {
  template<std::int32_t VecSize = 1>
  class mrg32k3a {
  public:
    static constexpr std::uint32_t default_seed = 1;
    static constexpr std::int32_t vec_size = VecSize;

    mrg32k3a() : mrg32k3a(default_seed) {}
    mrg32k3a(std::uint32_t seed, std::uint64_t offset = 0);
    mrg32k3a(std::initializer_list<std::uint32_t> seed, std::uint64_t offset = 0);
    mrg32k3a(std::uint32_t seed, std::initializer_list<std::uint64_t> offset);
    mrg32k3a(std::initializer_list<std::uint32_t> seed, std::initializer_list<std::uint64_t> offset);
  };
}

Include Files#

  • oneapi/mkl/rng/device.hpp

Template Parameters#

Name

Type

Description

VecSize

std::int32_t

Describes the size of vector which will be produced by generate function by this engine. VecSize values may be 1, 2, 3, 4, 8, 16 as sycl::vec class size. By default VecSize = 1, for this case, a single random number is returned by the generate function.

Constructors Input Parameters#

Name

Type

Description

seed

std::uint32_t std::initializer_list<std::uint32_t>

Initial conditions of the engine state.

offset

std::uint64_t std::initializer_list<std::uint64_t>

number of skipped elements, for initializer_list offset is calculated as: num_to_skip [0]+ num_to_skip [1]*264 + num_to_skip [2]* 2128 + … + num_to_skip [n-1]*264 *(n-1).

See VS Notes for the detailed descriptions.