adplus-dvertising
frame-decoration

Question

What is sign extending?

a.

Increasing the size of an unsigned integer

b.

Converting a signed integer to an unsigned integer

c.

Setting all upper bits for negative integers

d.

Clearing all upper bits for positive integers

Posted under Reverse Engineering

Answer: (c).Setting all upper bits for negative integers Explanation:Sign extending is the process of setting all upper bits for negative integers when converting a signed integer to a larger signed integer.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. What is sign extending?

Similar Questions

Discover Related MCQs

Q. What instruction is used to increase the size of an unsigned integer?

Q. What is the purpose of type conversions in programming?

Q. What is sign extending used for?

Q. Which operands are supported by MOVZX instruction for conversion?

Q. What happens during zero extending?

Q. Which instruction is used to increase the size of an unsigned integer?

Q. What is the purpose of type casting in programs?

Q. How are the upper 32 bits of the operands added?

Q. Which parts of the operands are added using the regular ADD instruction?

Q. What is the difference between the ADD and ADC instructions?

Q. How are 64-bit integers usually added?

Q. How are 64-bit data types usually stored in memory?

Q. Do all compilers have built-in mechanisms for dealing with 64-bit data types?

Q. How does the compiler perform arithmetic operations on 64-bit data types?

Q. Why do modern 32-bit software use larger-than-32-bit integer data types?

Q. What do some compilers use in order to determine the modulo?

Q. Why is the approach of using IDIV not the fastest in terms of runtime performance?

Q. What is the most common and intuitive method for calculating the modulo of a signed 32-bit integer?

Q. What is modulo?

Q. When do compilers use reciprocal in multiplication instructions?