Q&A: THE PENTIUM FDIV BUG
It's true !! The Pentium (TM) has a bug into the FPU. If you solve following
mathematical formula : 4,000,000 - (4,000,000 / 3,000,000) * 3,000,000
(with double precision) you keep following results (NO JOKE) : Pentium (256),
486 (0). So there where now a lot of jokes.
Q: How many Pentium designers does it take to screw in a light bulb?
A: 1.99904274017, but that's close enough for non-technical people.
Q: What do you get when you cross a Pentium PC with a research grant?
A: A mad scientist.
Q: What's another name for the "Intel Inside" sticker they put on Pentiums?
A: The warning label.
Q: What do you call a series of FDIV instructions on a Pentium?
A: Successive approximations.
Q: Complete the following word analogy: Add is to Subtract as Multiply is to:
- On a Pentium, all of the above
A: Number 4.
Q: What algorithm did Intel use in the Pentium's floating point divider?
A: "Life is like a box of chocolates." (Source: F. Gump of Intel)
Q: Why didn't Intel call the Pentium the 586?
A: Because they added 486 and 100 on the first Pentium and got 585.999983605.
Q: According to Intel, the Pentium conforms to the IEEE standards 754
and 854 for floating point arithmetic. If you fly in aircraft
designed using a Pentium, what is the correct pronunciation of "IEEE"?
Top Ten New Intel Slogans For The Pentium
9.9999973251 -- It's a FLAW, Dammit, not a Bug
8.9999163362 -- It's Close Enough, We Say So
7.9999414610 -- Nearly 300 Correct Opcodes
6.9999831538 -- You Don't Need to Know What's Inside
5.9999835137 -- Redefining the PC -- and Mathematics As Well
4.9999999021 -- We Fixed It, Really
3.9998245917 -- Division Considered Harmful
2.9991523619 -- Why Do You Think They Call It *Floating* Point?
1.9999103517 -- We're Looking for a Few Good Flaws
0.9999999998 -- The Errata Inside
THE TOP TEN REASONS TO BUY A PENTIUM MACHINE
- YOUR CURRENT COMPUTER IS TOO ACCURATE
- YOU WANT TO GET INTO THE GUINNESS BOOK AS "OWNER OF MOST EXPENSIVE PAPERWEIGHT"
- MATH ERRORS ADD ZEST TO LIFE
- YOU NEED AN ALIBI FOR THE I.R.S.
- YOU WANT TO SEE WHAT ALL THE FUSS IS ABOUT
- YOU'VE ALWAYS WONDERED WHAT IT WOULD BE LIKE TO BE A PLAINTIFF
- THE "INTEL INSIDE" LOGO MATCHES YOUR DECOR PERFECTLY
- YOU NO LONGER HAVE TO WORRY ABOUT CPU OVERHEATING
- YOU GOT A GREAT DEAL FROM JPL
- IT'LL PROBABLY WORK
P - Produces
E - Erroneous
N - Numbers
T - Through
I - Incorrect
U - Understanding of
M - Mathematics
NEW INTEL SLOGANS
Use at your own RISC!
Intel Pentium processor: Right *most* of the time!
Intel Pentium: We *Redefine* how people doing Math
Pentium; up to 8 decimal digits accuracy
Pentium; aren't 8 decimal digits enough?
Intel inside, but can it divide?
Intel inside? CAN'T divide....
Intel probably somewhere inside
Intel blew it.... and they knew it!!!!
When does 2+2=5? "When there's Intel Inside".