Skip to Content
Find the Bug A Book of Incorrect Programs
book

Find the Bug A Book of Incorrect Programs

by Adam Barr
October 2004
Intermediate to advanced
336 pages
6h 27m
English
Addison-Wesley Professional
Content preview from Find the Bug A Book of Incorrect Programs

Calculate Fibonacci Numbers

This function calculates the Nth Fibonacci number.

The Fibonacci numbers are a well-known mathematical sequence. The first and second numbers are both 1. From then on, the Nth number is the sum of numbers (N-1) and (N-2), so the sequence begins:

1, 1, 2, 3, 5, 8, 13, 21 . . .

Because the numbers can become large, the program calculates a 64-bit result. It assumes on entry that ecx contains the number in the Fibonacci sequence to calculate. It returns the result in edx:eax, which means edx stores the high 32 bits and eax stores the low 32 bits.

If the result would overflow 64 bits, 0 is returned.

This is a code fragment, ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

How to Overcome a Power Deficit

How to Overcome a Power Deficit

Cyril Bouquet, Jean-Louis Barsoux
What Successful Project Managers Do

What Successful Project Managers Do

W. Scott Cameron, Jeffrey S. Russell, Edward J. Hoffman, Alexander Laufer
Hello Stay Interviews, Goodbye Talent Loss

Hello Stay Interviews, Goodbye Talent Loss

Beverly Kaye, Sharon Jordan-Evans
Don't Teach Coding

Don't Teach Coding

Lindsey D. Handley, Stephen R. Foster

Publisher Resources

ISBN: 0321223918Purchase book