Decimal to Binary and Bit Manipulation | Dataford Interview Questions

An Analog Devices ADuCM355 firmware routine needs to inspect and update a register value. Given a nonnegative decimal integer, convert it to a fixed-width binary representation and apply one operation to a specified bit.

Implement manipulate_register_bits(value, width, bit_index, operation). Bit index 0 is the least significant bit. The operation is one of "set", "clear", or "toggle". Return the resulting value as a binary string of exactly width characters, including leading zeroes.

Formal Specification

Input: integers value, width, and bit_index, plus a string operation.
Output: a binary string representing the modified value, from most significant bit to least significant bit.
Do not use Python's bin() function. Use bitwise operators and formatting or equivalent logic.

Constraints

0 <= value < 2^width
1 <= width <= 32
0 <= bit_index < width
operation is one of "set", "clear", or "toggle"

Function Signature

def manipulate_register_bits(value, width, bit_index, operation):

Your question is Decimal to Binary and Bit Manipulation. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Formal Specification

Input: integers value, width, and bit_index, plus a string operation.
Output: a binary string representing the modified value, from most significant bit to least significant bit.
Do not use Python's bin() function. Use bitwise operators and formatting or equivalent logic.

Constraints

0 <= value < 2^width
1 <= width <= 32
0 <= bit_index < width
operation is one of "set", "clear", or "toggle"

Function Signature

def manipulate_register_bits(value, width, bit_index, operation):

Your question is Decimal to Binary and Bit Manipulation. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.