clientbot/tools/getPowerOf2.py

#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# module getPowerOf2
#
#    Copyright (C) 2019  AleaJactaEst
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.


def getPowerOf2(v):
    res=1;
    ret=0;
    while res<v:
        ret += 1
        res *= 2
    return ret

def getPowerOf2_Bis(v):
    res=1;
    ret=0;
    while res<=v:
        ret += 1
        res *= 2
    return ret


def getPowerOf2_ter(v):
    res=1;
    ret=0;
    while res<v:
        ret += 1
        res *= 2
    if ret == 0:
        ret = 1
    return ret