diff options
Diffstat (limited to 'numpy/random/tests/test_direct.py')
| -rw-r--r-- | numpy/random/tests/test_direct.py | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/numpy/random/tests/test_direct.py b/numpy/random/tests/test_direct.py index ea1ebacb6..58d966adf 100644 --- a/numpy/random/tests/test_direct.py +++ b/numpy/random/tests/test_direct.py @@ -46,25 +46,27 @@ def assert_state_equal(actual, target): assert actual[key] == target[key] +def uint32_to_float32(u): + return ((u >> np.uint32(8)) * (1.0 / 2**24)).astype(np.float32) + + def uniform32_from_uint64(x): x = np.uint64(x) upper = np.array(x >> np.uint64(32), dtype=np.uint32) lower = np.uint64(0xffffffff) lower = np.array(x & lower, dtype=np.uint32) joined = np.column_stack([lower, upper]).ravel() - out = (joined >> np.uint32(9)) * (1.0 / 2 ** 23) - return out.astype(np.float32) + return uint32_to_float32(joined) def uniform32_from_uint53(x): x = np.uint64(x) >> np.uint64(16) x = np.uint32(x & np.uint64(0xffffffff)) - out = (x >> np.uint32(9)) * (1.0 / 2 ** 23) - return out.astype(np.float32) + return uint32_to_float32(x) def uniform32_from_uint32(x): - return (x >> np.uint32(9)) * (1.0 / 2 ** 23) + return uint32_to_float32(x) def uniform32_from_uint(x, bits): @@ -126,6 +128,7 @@ def gauss_from_uint(x, n, bits): return gauss[:n] + def test_seedsequence(): from numpy.random.bit_generator import (ISeedSequence, ISpawnableSeedSequence, |