def f(x, y):
x = r_uint(x)
y = r_uint(y)
rnd = Random(x)
rnd.init_by_array([x, y])
rnd.jumpahead(intmask(y))
return float(rnd.genrand32()) + rnd.random()
def f(x, y):
x = r_uint(x)
y = r_uint(y)
rnd = Random(x)
rnd.init_by_array([x, y])
rnd.jumpahead(intmask(y))
return float(rnd.genrand32()) + rnd.random()
def test_jumpahead_badstate():
rnd = Random()
s, j = 4043161618, 2674112291824205302
rnd.init_by_array([s])
rnd.jumpahead(j)
for i in range(500):
r = rnd.random()
assert r <= 1.0, (r, i)
def test_jumpahead_badstate():
rnd = Random()
s, j = 4043161618, 2674112291824205302
rnd.init_by_array([s])
rnd.jumpahead(j)
for i in range(500):
r = rnd.random()
assert r <= 1.0, (r, i)
def test_init_by_array():
rnd = Random()
rnd.init_by_array([r_uint(n) for n in [1, 2, 3, 4]])
assert rnd.state[:14] == [2147483648, 1269538435, 699006892, 381364451,
172015551, 3237099449, 3609464087, 2187366456, 654585064,
2665903765, 3735624613, 1241943673, 2038528247, 3774211972]
# try arrays of various sizes to test for corner cases
for size in [N, N - 1, N + 1, N // 2, 2 * N]:
rnd.init_by_array([r_uint(n) for n in range(N)])
def test_init_by_array():
rnd = Random()
rnd.init_by_array([r_uint(n) for n in [1, 2, 3, 4]])
assert rnd.state[:14] == [
2147483648, 1269538435, 699006892, 381364451, 172015551, 3237099449,
3609464087, 2187366456, 654585064, 2665903765, 3735624613, 1241943673,
2038528247, 3774211972
]
# try arrays of various sizes to test for corner cases
for size in [N, N - 1, N + 1, N // 2, 2 * N]:
rnd.init_by_array([r_uint(n) for n in range(N)])
