Accessing Bits

BlitzMax Forums/BlitzMax Programming/Accessing Bits

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Defoc8
 #1
128 64 32 16 8 4 2 1
$FF = 1 1 1 1 1 1 1 1
$0F = 0 0 0 0 1 1 1 1
$01 = 0 0 0 0 0 0 0 1 - refreshing your memory?

test if bit zero is set..
if(mask & $01)do something..

test if bit 15 is set
if(mask & $80)do something

mask out most sig nibble
mask=mask & $0F