shr/shl

[speedlemon]

what do these do?

no offense wt, but im kinda tired of looking at the wikis you post. i would just like a simple explanation this time. :wink:

[mjs]

SHL = SHift Left
SHR = SHift Right

Shifts an integral number by a given number of bits.

Example:

Code:

print 1 shl 4 ' outputs 16

'x SHL y' is mathematically the same as 'x * 2 ^ y' for every y>=0 and 'x SHR y' is mathematically the same as 'fix(x / 2 ^ y)' for every y>=0.

Regards,
Mark

[Deleter]

Visual representation
2:
00000000 00000000 00000000 00000010
2 shl 1:
00000000 00000000 00000000 00000100
2 shr 1:
00000000 00000000 00000000 00000001

edit: assuming a 32 bit number is used

[speedlemon]

Thank u mjs and deleter for that quick as hell explanation.

cross my heart.

[Deleter]

np, hope all works out well