Created
December 31, 2011 07:23
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Bit Twiddling
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| <?php | |
| function setbit($flags,$position) | |
| { | |
| return $flags|(1<<$position); | |
| } | |
| function resetbit($flags,$position) | |
| { | |
| return $flags&(~(1<<$position)); | |
| } | |
| function togglebit($flags,$position) | |
| { | |
| return $flags^(1<<$position); | |
| } | |
| function readbit($flags,$position) | |
| { | |
| return ($flags|(1<<$position))?1:0; | |
| } | |
| ?> |
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