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from .mtrand import RandomState
from ._philox import Philox
from ._pcg64 import PCG64, PCG64DXSM
from ._sfc64 import SFC64
from ._generator import Generator
from ._mt19937 import MT19937
BitGenerators = {'MT19937': MT19937,
'PCG64': PCG64,
'PCG64DXSM': PCG64DXSM,
'Philox': Philox,
'SFC64': SFC64,
}
def __bit_generator_ctor(bit_generator_name='MT19937'):
"""
Pickling helper function that returns a bit generator object
Parameters
----------
bit_generator_name : str
String containing the name of the BitGenerator
Returns
-------
bit_generator : BitGenerator
BitGenerator instance
"""
if bit_generator_name in BitGenerators:
bit_generator = BitGenerators[bit_generator_name]
else:
raise ValueError(str(bit_generator_name) + ' is not a known '
'BitGenerator module.')
return bit_generator()
def __generator_ctor(bit_generator_name="MT19937",
bit_generator_ctor=__bit_generator_ctor):
"""
Pickling helper function that returns a Generator object
Parameters
----------
bit_generator_name : str
String containing the core BitGenerator's name
bit_generator_ctor : callable, optional
Callable function that takes bit_generator_name as its only argument
and returns an instantized bit generator.
Returns
-------
rg : Generator
Generator using the named core BitGenerator
"""
return Generator(bit_generator_ctor(bit_generator_name))
def __randomstate_ctor(bit_generator_name="MT19937",
bit_generator_ctor=__bit_generator_ctor):
"""
Pickling helper function that returns a legacy RandomState-like object
Parameters
----------
bit_generator_name : str
String containing the core BitGenerator's name
bit_generator_ctor : callable, optional
Callable function that takes bit_generator_name as its only argument
and returns an instantized bit generator.
Returns
-------
rs : RandomState
Legacy RandomState using the named core BitGenerator
"""
return RandomState(bit_generator_ctor(bit_generator_name))