BitLShift - Revision history

Necktrox: Minor description tweak

2016-02-21T22:29:34Z

Minor description tweak

← Older revision		Revision as of 22:29, 21 February 2016
Line 12:		Line 12:
	===Required arguments===		===Required arguments===
	*'''value:''' The value you want to perform the shift on.		*'''value:''' The value you want to perform the shift on.
	*'''n:''' The amount of positions to ~~rotate~~ the value by.		*'''n:''' The amount of positions to shift the value by.

	===Returns===		===Returns===

Necktrox: Minor example extension

2016-02-21T22:28:26Z

Minor example extension

← Older revision		Revision as of 22:28, 21 February 2016
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	local positions = 0x4 -- binary: 0100, decimal: 4		local positions = 0x4 -- binary: 0100, decimal: 4
	local shifted = bitLShift( value, positions ) -- binary: 1111 1111 1111 1111 1111 1111 1111 0000, decimal: 4.294.967.280		local shifted = bitLShift( value, positions ) -- binary: 1111 1111 1111 1111 1111 1111 1111 0000, decimal: 4.294.967.280

			-- Comparsion:
			-- binary: 1111 1111 1111 1111 1111 1111 1111 1111, decimal: 4.294.967.295
			-- binary: 1111 1111 1111 1111 1111 1111 1111 0000, decimal: 4.294.967.280
	</syntaxhighlight>		</syntaxhighlight>

	==See Also==		==See Also==
	{{Bit_functions}}		{{Bit_functions}}

Necktrox: Minor fixes

2016-02-21T22:27:25Z

Minor fixes

← Older revision		Revision as of 22:27, 21 February 2016
Line 11:		Line 11:

	===Required arguments===		===Required arguments===
	*'''value:''' The value you want to perform the ~~rotation~~ on.		*'''value:''' The value you want to perform the shift on.
	*'''n:''' The amount of positions to rotate the value by.		*'''n:''' The amount of positions to rotate the value by.

Line 22:		Line 22:
	local value = 0xFFFFFFFF -- binary: 1111 1111 1111 1111 1111 1111 1111 1111, decimal: 4.294.967.295		local value = 0xFFFFFFFF -- binary: 1111 1111 1111 1111 1111 1111 1111 1111, decimal: 4.294.967.295
	local positions = 0x4 -- binary: 0100, decimal: 4		local positions = 0x4 -- binary: 0100, decimal: 4
	local shifted = bitLShift( value, positions ) -- binary: 1111 1111 1111 1111 1111 1111 1111 0000, decimal: ~~4294967280~~		local shifted = bitLShift( value, positions ) -- binary: 1111 1111 1111 1111 1111 1111 1111 0000, decimal: 4.294.967.280
	</syntaxhighlight>		</syntaxhighlight>

	==See Also==		==See Also==
	{{Bit_functions}}		{{Bit_functions}}

Necktrox: Added page for bitLShift

2016-02-21T22:21:08Z

Added page for bitLShift

New page

__NOTOC__
{{Shared function}}

This functions performs a logical left shift on the integer '''value''' by integer '''n''' positions. In a ''logical shift'', zeros are shifted in to replace the discarded bits.
See [https://en.wikipedia.org/wiki/Bitwise_operation#Logical_shift Bitwise operation] for more details.

==Syntax==
<syntaxhighlight lang="lua">
int bitLShift ( int value, int n )
</syntaxhighlight>

===Required arguments===
*'''value:''' The value you want to perform the rotation on.
*'''n:''' The amount of positions to rotate the value by.

===Returns===
Returns the logical left shifted value as ''integer''.

==Example==
This example shows the usage of the function [[bitLShift]].
<syntaxhighlight lang="lua">
local value = 0xFFFFFFFF -- binary: 1111 1111 1111 1111 1111 1111 1111 1111, decimal: 4.294.967.295
local positions = 0x4 -- binary: 0100, decimal: 4
local shifted = bitLShift( value, positions ) -- binary: 1111 1111 1111 1111 1111 1111 1111 0000, decimal: 4294967280
</syntaxhighlight>

==See Also==
{{Bit_functions}}