Q&A: THE PENTIUM FDIV BUG
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:
1) Divide
2) Round
3) Random
4) 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 the floating point arithmetic. If you fly in an aircraft designed using a
Pentium, what is the correct pronuciation of "IEEE"?
A: Aaaaaaaiiiiiiiiieeeeeeeeeeeee!
TOP TEN NEW 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
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