python get highest bit - PrivacyWall

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bit manipulation - Python How to get set bit - Stack Overflow

To get the bit number of the highest bit set, you could use. int.bit_length()-1 This is much more efficient then using math.log() or the other function you had posted. EDIT: As requested, timeit results are posted: python -m timeit -s 'import math;x=100' 'int(math.log(x,2))' 1000000 loops, best of 3: 0.5 usec per loop

https://wiki.python.org/moin/BitManipulation

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BitManipulation - Python Wiki

The number of the highest bit set is the highest power of 2 less than or equal to the input integer. This is the same as the exponent of the floating point representation of the integer, and is also called its "integer log base 2".(ref.1) In versions before 3.1, the easiest way to determine the highest bit set is*:

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python - Lowest/highest bit set in integer. | DaniWeb

These two functions compute the orders of the lowest bit and the highest bit set in the binary representation of an integer. I expect them to. Menu Menu DaniWeb. Log In Sign Up . Read ; Contribute ; Meet ; Search Search. ... Notice that in python 3, integers have a method bit_length() which computes the number of bits. The high_bit ...

https://btechgeeks.com/python-program-to-get-nth-bit-of-a-number/

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Python Program to Get nth Bit of a Number - BTech Geeks

Python Program to Find the Total Number of Bits Needed to be Flipped; Python Program to Check whether kth Bit is Set or not; Example2: Input: Given Number = 14 Bit position(in range 0-31)= 3. Output: The bit present at the given position{ 3 } for a given number is 1 Program to Get nth Bit of a Number in Python

https://github.com/TheAlgorithms/Python/blob/master/bit_manipulat...

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Python/bit_manipulation/highest_set_bit.py at master - GitHub

All Algorithms implemented in Python. Contribute to TheAlgorithms/Python development by creating an account on GitHub.

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Given an integer how do I calculate the index of the first non zero bit ...

There is a slight bit trick to get the mask for the highest bit: x & ((~x) + 1) but not for getting the index. If you need high performance for this, you could use a (one- or two-byte) lookup array instead. ... EDIT: I just noticed the post wasn't about Python ...

https://post.bytes.com/forum/topic/python/749881-how-to-get-the-t...

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how to get the thighest bit position in big integers?

Hi, I'm using python to develop some proof-of-concept code for a cryptographic application. My code makes extended use of python's native bignum capabilities. In many cryptographic applications there is the need for a function 'get_highest_bit_num' that returns the position number of the highest set bit of a given integer.

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python - Most Significant Byte Calculation - Stack Overflow

Is the goal to get the top aligned byte, or the highest eight bits set? Makes a big difference. – ShadowRanger. Commented Sep 29, 2015 at 3:05. ... return index of least significant bit in Python. 1. Get the x Least Significant Bits from a String in Python. 0. Arbitrary length integer to byte array conversion ...

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python - Maximum and Minimum values for ints - Stack Overflow

Python 3. In Python 3, this question doesn't apply. The plain int type is unbounded.. However, you might actually be looking for information about the current interpreter's word size, which will be the same as the machine's word size in most cases.That information is still available in Python 3 as sys.maxsize, which is the maximum value representable by a signed word.

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Clearing the most significant bit from an integer - code golf

The output isn with its most significant bit set to 0. Test Cases 1 -> 0 2 -> 0 10 -> 2 16 -> 0 100 -> 36 267 -> 11 350 -> 94 500 -> 244 For example: 350 in binary is 101011110. Setting its most significant bit (i.e. the leftmost 1 bit) to 0 turns it into 001011110 which is equivalent to the decimal integer 94, the output.

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