jupyter/comparison-to-datasketch/utils.py (17 lines of code) (raw):
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
import numpy as np
def distinct_number_sequence(start:np.uint64=0) -> np.uint64:
"""Generator function to make 64-bit numbers that are distinct."""
assert isinstance(start, np.uint64)
num = start
golden_ratio = np.uint64(0x9e3779b97f4a7c13)
while True:
yield num
num += np.uint64(golden_ratio)
if __name__ == '__main__':
start = np.uint64(2345234635)
ndistincts = np.uint64(10)
count = 0
for i in distinct_number_sequence(start):
print(i, end="\n")
count += 1
if count == ndistincts:
break