Core Function BitSwap - Revision history

UberFoX: 1 revision

2015-06-14T12:37:48Z

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UberFoX: 1 revision

2014-08-11T21:41:09Z

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UberFoX at 20:21, 8 August 2014

2014-08-08T20:21:41Z

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	So if you swap the bytes of an Int32 you will get an Int32 in the return value.		So if you swap the bytes of an Int32 you will get an Int32 in the return value.
		+
		+	Also this function if given a byte/sbyte will return it unchanged but String, bool and objects etc will cause a NULL return value.

	=== Example ===		=== Example ===

UberFoX at 18:12, 8 August 2014

2014-08-08T18:12:32Z

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	<pre>		<pre>
−	~~BitROTATE~~( <expression> )	+	BitSwap( <expression> )
	</pre>		</pre>

UberFoX: Created page with "

 BitROTATE(  )

=== Description === Byte-swap of the expression (little-endian <-> big-endian) === Parameters === ==== expression ==== Any valid numer..."

2014-08-08T18:12:13Z

Created page with "<pre> BitROTATE( <expression> ) </pre> === Description === Byte-swap of the expression (little-endian <-> big-endian) === Parameters === ==== expression ==== Any valid numer..."

New page

<pre>
BitROTATE( <expression> )
</pre>

=== Description ===

Byte-swap of the expression (little-endian <-> big-endian)

=== Parameters ===

==== expression ====

Any valid numeric expression.

=== Return Value ===

Success: Returns the value with its bytes swapped to convert to/from endians.

Failure: Returns NULL.

=== Remarks ===

This function is smart enough to see what type of variable you are using such as Int16, UInt16, Float, Double etc etc and byte swap accordingly you will get back the same you gave it.

So if you swap the bytes of an Int32 you will get an Int32 in the return value.

=== Example ===

A 64-Bit Integer

<syntaxhighlight lang="sputnik">
$a = (Int64)21216547458451;
say $a;
printr Pack('q', $a);
$b = BitSwap($a);
say $b;
printr Pack('q', $b);
$c = BitSwap($b);
say $c;
</syntaxhighlight>

A 64-bit Floating point

<syntaxhighlight lang="sputnik">
$a = (double)5684343474375685;
say $a;
printr Pack('d', $a);
$b = BitSwap($a);
say $b;
printr Pack('d', $b);
$c = BitSwap($b);
say $c;
</syntaxhighlight>

[[Category:Core Function]]