3rd Edition

ISBN: 8220101459107

Author: O'HALLARON

Publisher: YUZU

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Textbook Question

Chapter 2, Problem 2.66HW

Write code to implement the following function:

* Generate mask indicating leftmost 1 in x. Assume w=32.

* For example, 0xFF00 -> 0x8000, and 0x6600 — > 0x4000.

* If x = 0, then return 0.

int leftmost_one(unsigned x);

Your function should follow the bit-level integer coding rules (page 128), except that you may assume that data type int has w = 32 bits.

Your code should contain a total of at most 15 arithmetic, bitwise, and logical operations.

Hint: First transform x into a bit vector of the form [0…011…1].

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Chapter 2, Problem 2.65HW

Chapter 2, Problem 2.67HW

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Chapter 2 Solutions

EBK COMPUTER SYSTEMS

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