- published: 02 Jul 2015
- views: 208536
In mathematics, a power of two means a number of the form 2n where n is an integer, i.e. the result of exponentiation with number two as the base and integer n as the exponent.
In a context where only integers are considered, n is restricted to non-negative values, so we have 1, 2, and 2 multiplied by itself a certain number of times.
Because two is the base of the binary numeral system, powers of two are common in computer science. Written in binary, a power of two always has the form 100…000 or 0.00…001, just like a power of ten in the decimal system.
Verbal expressions, mathematical notations, and computer programming expressions using a power operator or function include:
Two to the power of n, written as 2n, is the number of ways the bits in a binary word of length n can be arranged. A word, interpreted as an unsigned integer, can represent values from 0 (000…000) to 2n − 1 (111…111) inclusively. Corresponding signed integer values can be positive, negative and zero; see signed number representations. Either way, one less than a power of two is often the upper bound of an integer in binary computers. As a consequence, numbers of this form show up frequently in computer software. As an example, a video game running on an 8-bit system might limit the score or the number of items the player can hold to 255—the result of using a byte, which is 8 bits long, to store the number, giving a maximum value of 28 − 1 = 255. For example, in the original Legend of Zelda the main character was limited to carrying 255 rupees (the currency of the game) at any given time, and the video game Pac-Man famously shuts down at level 255.
Ghetto
Hold me down
Next, yeah
All I ever need is my wifey
And some real niggas behind me
A lady to hold me down
My niggas will hold me down
Someone that can ride in the passenger side
Ride or die, cop the cake, then we define
Can't nothing hold me down
Can't nothing hold me down
The sun don't shine, sun don't shine
If I, can't wake up next to mine
Wake her ass up, tap her one more time
No more baby sleepin', but she don? t mind
Yeah, she's ghetto
But she keeps a nigga level
Even when I'm short on change
She won't complain, even got an extra job to maintain
All I ever need is my wifey
And some real niggas behind me
A lady to hold me down
My niggas will hold me down
Someone that can ride in the passenger side
Ride or die, cop the cake, then we define
Can't nothing hold me down
Can't nothing hold me down
I use to be real friendly with everybody
'Til somebody tried to take my baby
Now the only niggas that hang with me
Are a chosen few, my chosen crew 'cause
Some niggas are slimy dude but
You know who Im talkin to you, trust
Real recognize, real for real,
This is Robert, we fell 'way before the deal
All I ever need is my wifey
And some real niggas behind me
A lady to hold me down
My niggas will hold me down
Someone that can ride in the passenger side
Ride or die, cop the cake, then we define
Can't nothing hold me down
Can't nothing hold me down
All I ever need is my wifey
And some real niggas behind me
A lady to hold me down
My niggas will hold me down
Someone that can ride in the passenger side
Ride or die, cop the cake, then we define
Can't nothing hold me down
Can't nothing hold me down
No matter how hard it is
Or how bad the storm gets
I promise this
That I will always be right here
If it? s a dollar it's fifty cent a piece
If it? s a million you get five hundred Gs
'Cause we are family
I'll ride for you, if you'll ride for me
All I ever need is my wifey
And some real niggas behind me
A lady to hold me down
My niggas will hold me down
Someone that can ride in the passenger side
Ride or die, cop the cake, then we define
Can't nothing hold me down
Can't nothing hold me down
All I ever need is my wifey
And some real niggas behind me
A lady to hold me down
My niggas will hold me down
Someone that can ride in the passenger side
Ride or die, cop the cake, then we define
Can't nothing hold me down