Set Register Bit with Mask

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Problem

In NXP Semiconductors embedded software, register updates are often done with bit masks. Given a 32-bit unsigned register value, write a function that sets the 5th bit and returns the updated register.

Assume bit positions are 0-indexed from the least significant bit, so the 5th bit means bit index 4.

Formal Specification

Input: An integer reg representing a 32-bit unsigned register value.
Output: An integer representing the updated 32-bit value after setting bit 4.
The operation must preserve all other bits.

Constraints

0 <= reg <= 4294967295
The register is treated as a 32-bit unsigned value
Bit positions are 0-indexed from the least significant bit
The solution should use bitwise operations

Function Signature

def set_fifth_bit(reg):

Your solutionPython 3

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