mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 16:57:49 +03:00
ab3a7cb21f
Summary: In preparation for merging fb-mercurial sources to the Eden repository, move everything from the top-level directory into an `eden/scm` subdirectory.
28 lines
687 B
Python
28 lines
687 B
Python
# Copyright (c) Facebook, Inc. and its affiliates.
|
|
#
|
|
# This software may be used and distributed according to the terms of the
|
|
# GNU General Public License version 2.
|
|
|
|
|
|
def bisect(l, r, comp, val):
|
|
"""Bisect algorithm with custom compare function
|
|
|
|
Returns smallest index between l and r whose value is equal to val.
|
|
Returns None if there are no such index.
|
|
"""
|
|
if r < l:
|
|
return None
|
|
while l < r:
|
|
m = (l + r) / 2
|
|
cmpresult = comp(m, val)
|
|
if cmpresult == -1:
|
|
l = m + 1
|
|
elif cmpresult == 0:
|
|
r = m
|
|
else:
|
|
r = m - 1
|
|
|
|
if r < l or comp(l, val) != 0:
|
|
return None
|
|
return l
|