Question

Name the function that breaks a floating-point number into a normalized fraction and an integral power of 2.

(a) exp()

(b) frexp()

(c) Idexp()

(d) modf()

I have been asked this question in a job interview.

This is a very interesting question from Mathematical functions in chapter C Library of C

Answer 1

Correct answer is (b) frexp()

For explanation: The frexp() function breaks a floating-point number into a normalized fraction and an integral power of 2.