xrandom¶
Defined in xtensor/xrandom.hpp
-
default_engine_type &
xt::random::
get_default_random_engine
()¶ Returns a reference to the default random number engine.
-
void
xt::random::
seed
(seed_type seed)¶ Seeds the default random number generator with
seed
.- Parameters
seed
: The seed
- template <class T, class S, class E = random::default_engine_type>
-
auto
xt::random::
rand
(const S &shape, T lower = 0, T upper = 1, E &engine = random::get_default_random_engine())¶ xexpression with specified
shape
containing uniformly distributed random numbers in the interval fromlower
toupper
, excluding upper.Numbers are drawn from
std::uniform_real_distribution
.- Parameters
shape
: shape of resulting xexpressionlower
: lower boundupper
: upper boundengine
: random number engine
- Template Parameters
T
: number type to use
- template <class T, class S, class E = random::default_engine_type>
-
auto
xt::random::
randint
(const S &shape, T lower = 0, T upper = std::numeric_limits< T >::max(), E &engine = random::get_default_random_engine())¶ xexpression with specified
shape
containing uniformly distributed random integers in the interval fromlower
toupper
, excluding upper.Numbers are drawn from
std::uniform_int_distribution
.- Parameters
shape
: shape of resulting xexpressionlower
: lower boundupper
: upper boundengine
: random number engine
- Template Parameters
T
: number type to use
- template <class T, class S, class E = random::default_engine_type>
-
auto
xt::random::
randn
(const S &shape, T mean = 0, T std_dev = 1, E &engine = random::get_default_random_engine())¶ xexpression with specified
shape
containing numbers sampled from the Normal (Gaussian) random number distribution with meanmean
and standard deviationstd_dev
.Numbers are drawn from
std::normal_distribution
.- Parameters
shape
: shape of resulting xexpressionmean
: mean of normal distributionstd_dev
: standard deviation of normal distributionengine
: random number engine
- Template Parameters
T
: number type to use