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# mode: run
# tag: cpp, cpp11
from libcpp.random cimport mt19937
def mt19937_seed_test():
"""
>>> print(mt19937_seed_test())
1608637542
"""
cdef mt19937 rd = mt19937(42)
return rd()
def mt19937_reseed_test():
"""
>>> print(mt19937_reseed_test())
1608637542
"""
cdef mt19937 rd
rd.seed(42)
return rd()
def mt19937_min_max():
"""
>>> x, y = mt19937_min_max()
>>> print(x)
0
>>> print(y) # 2 ** 32 - 1 because mt19937 is 32 bit.
4294967295
"""
cdef mt19937 rd
return rd.min(), rd.max()
def mt19937_discard(z):
"""
>>> x, y = mt19937_discard(13)
>>> print(x)
1972458954
>>> print(y)
1972458954
"""
cdef mt19937 rd = mt19937(42)
# Throw away z random numbers.
rd.discard(z)
a = rd()
# Iterate over z random numbers.
rd.seed(42)
for _ in range(z + 1):
b = rd()
return a, b
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