Python: unsigned 32 bit bitwise arithmetic

Python: unsigned 32 bit bitwise arithmetic

In Python, you can perform unsigned 32-bit bitwise arithmetic using the & (bitwise AND), | (bitwise OR), ^ (bitwise XOR), ~ (bitwise NOT), and bit shift operators (<< for left shift and >> for right shift). These operators work on integers in Python.

Here's how you can perform unsigned 32-bit bitwise operations:

1. Unsigned 32-bit Integer Representation:

To perform operations as if you are working with unsigned 32-bit integers, you can use the & 0xFFFFFFFF mask to limit the result to 32 bits.

2. Bitwise AND (&):

a = 0xABCDEF12 b = 0x12345678 result = (a & 0xFFFFFFFF) & (b & 0xFFFFFFFF) print(hex(result)) # Output: '0x10245610'

3. Bitwise OR (|):

a = 0xABCDEF12 b = 0x12345678 result = (a & 0xFFFFFFFF) | (b & 0xFFFFFFFF) print(hex(result)) # Output: '0xBBFDEFFA'

4. Bitwise XOR (^):

a = 0xABCDEF12 b = 0x12345678 result = (a & 0xFFFFFFFF) ^ (b & 0xFFFFFFFF) print(hex(result)) # Output: '0xAB4E89EA'

5. Bitwise NOT (~):

a = 0xABCDEF12 result = ~ (a & 0xFFFFFFFF) print(hex(result)) # Output: '-0xABCFEF13'

6. Bitwise Left Shift (<<) and Right Shift (>>):

a = 0xABCDEF12 left_shifted = (a & 0xFFFFFFFF) << 4 right_shifted = (a & 0xFFFFFFFF) >> 4 print(hex(left_shifted)) # Output: '0xBCDEF120' print(hex(right_shifted)) # Output: '0xABCDEF1'

Remember that Python's integers are not limited to 32 bits by default, so the & 0xFFFFFFFF mask is used to ensure that the bitwise operations only affect the least significant 32 bits.

Examples

  1. "Python: How to ensure unsigned 32-bit integer arithmetic?"

    • This query describes how to maintain unsigned 32-bit behavior in Python when performing arithmetic operations.
    # Ensure unsigned 32-bit integer bounds def to_unsigned_32bit(n): return n & 0xFFFFFFFF # Force 32-bit unsigned representation # Example of unsigned 32-bit addition a = 0xFFFFFFFF # Maximum unsigned 32-bit integer b = 1 result = to_unsigned_32bit(a + b) # Wraps around print(hex(result)) # Output: 0x0 (because 0xFFFFFFFF + 1 wraps to 0x0)

  2. "Python: How to perform unsigned 32-bit bitwise AND?"

    • This query demonstrates how to perform bitwise AND operations while maintaining unsigned 32-bit results.
    def unsigned_and(x, y): return x & y & 0xFFFFFFFF # Ensure unsigned 32-bit a = 0xF0F0F0F0 b = 0x0F0F0F0F result = unsigned_and(a, b) print(hex(result)) # Output: 0x0F0F0F0F

  3. "Python: How to perform unsigned 32-bit bitwise OR?"

    • This query shows how to execute bitwise OR operations with unsigned 32-bit results.
    def unsigned_or(x, y): return (x | y) & 0xFFFFFFFF # Ensure unsigned 32-bit a = 0xF0F0F0F0 b = 0x0F0F0F0F result = unsigned_or(a, b) print(hex(result)) # Output: 0xFFFFFFFF

  4. "Python: How to perform unsigned 32-bit bitwise XOR?"

    • This query discusses how to perform bitwise XOR operations with unsigned 32-bit arithmetic.
    def unsigned_xor(x, y): return (x ^ y) & 0xFFFFFFFF # Ensure unsigned 32-bit a = 0xF0F0F0F0 b = 0x0F0F0F0F result = unsigned_xor(a, b) print(hex(result)) # Output: 0xFFFFFFFF

  5. "Python: How to perform unsigned 32-bit bitwise NOT?"

    • This query shows how to apply bitwise NOT operations while maintaining unsigned 32-bit results.
    def unsigned_not(x): return (~x) & 0xFFFFFFFF # Ensure unsigned 32-bit a = 0xF0F0F0F0 result = unsigned_not(a) print(hex(result)) # Output: 0x0F0F0F0F

  6. "Python: How to perform unsigned 32-bit bitwise left shift?"

    • This query demonstrates how to perform bitwise left shift with unsigned 32-bit results.
    def unsigned_left_shift(x, shift): # Shift and apply 32-bit mask return (x << shift) & 0xFFFFFFFF a = 0xF0F0F0F0 shift = 4 result = unsigned_left_shift(a, shift) print(hex(result)) # Output: 0x0F0F0F00

  7. "Python: How to perform unsigned 32-bit bitwise right shift?"

    • This query discusses bitwise right shift operations in the context of unsigned 32-bit arithmetic.
    def unsigned_right_shift(x, shift): return (x >> shift) & 0xFFFFFFFF # Ensure unsigned 32-bit a = 0xF0F0F0F0 shift = 4 result = unsigned_right_shift(a, shift) print(hex(result)) # Output: 0x0F0F0F0F

  8. "Python: How to handle overflow in unsigned 32-bit arithmetic?"

    • This query explains how to manage overflow when dealing with unsigned 32-bit arithmetic in Python.
    def unsigned_add(x, y): # Perform addition and apply 32-bit mask to prevent overflow return (x + y) & 0xFFFFFFFF a = 0xFFFFFFFF b = 1 result = unsigned_add(a, b) print(hex(result)) # Output: 0x0

  9. "Python: How to perform unsigned 32-bit arithmetic in a loop?"

    • This query describes how to ensure unsigned 32-bit arithmetic in loop-based calculations.
    def unsigned_loop_addition(numbers): result = 0 for num in numbers: result = (result + num) & 0xFFFFFFFF # Apply 32-bit mask return result numbers = [0xFFFFFFFF, 1, 2, 3] result = unsigned_loop_addition(numbers) print(hex(result)) # Output: 0x5

  10. "Python: How to convert Python integers to unsigned 32-bit format?"

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