(x > y) - (x < y)

Returns 1, 0 or -1 depending on which is greater, x or y. Very useful for rapid (or more accurately, less-slow) alphanumerical sorting functions.

__________________
And you, to whom adversity has dealt the final blow
With smiling [faces] lyin' to ye' everywhere ye' go
Turn to, and put out all your strength of arm and heart and brain
And like the Mary Ellen Carter, rise again.

Sort of like the C function strcmp (x,y)

I didn't write it, go hit Frank Drake. (My catchphrase in movies at the point when the aliens turn out to be evil invaders.)

__________________
I want to go back to the moon.
I don't care which rocket you use, whichever one you pick, I'll like it, I swear.
"If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis
Rovers forever! - ToSeek

Circumference = pi × diameter. Who'd have thought it would be a constant?

__________________
Life is like a box of chocolates. All of your choices are bad for you.

Yup. That's exactly right, and that's pretty much what strcmp is for: the conditional in O(n*log(n)) alphanumeric sorting algorithms such as Merge Sort and Quick Sort.

__________________
And you, to whom adversity has dealt the final blow
With smiling [faces] lyin' to ye' everywhere ye' go
Turn to, and put out all your strength of arm and heart and brain
And like the Mary Ellen Carter, rise again.

Mine is Boom=M*c^2

__________________
If I set the budget, we'd have Ares and more. Unfortunately, I don't set the budget, and Ares is just too expensive and too far out for us to accomplish our goals within the budget we were given.

If we halt the ISS, all versions of Ares, and transport Orion and Altair aboard DIRECTv3's Jupiter family of Shuttle-Derived Launch Vehicles, we just might make it back to the Moon by 2020.

E=mc^2
A^2+B^2=C^2
The drake equation

__________________
There is no dark side of the moon really, as a matter of fact it's all dark - Pink Floyd, The Dark Side Of The Moon