Setting or clearing bit flags in a decimal is not particular hard but unintuitive. Here is a quick refresher showing how you can set and clear individual bits in a number:
$decimal = 6254 [Convert]::ToString($decimal, 2) # set bit 4 $bit = 4 $decimal = $decimal -bor [Math]::Pow(2, $bit) [Convert]::ToString($decimal, 2) # set bit 0 $bit = 0 $decimal = $decimal -bor [Math]::Pow(2, $bit) [Convert]::ToString($decimal, 2) # clear bit 1 $bit = 1 $decimal = $decimal -band -bnot [Math]::Pow(2, $bit) [Convert]::ToString($decimal, 2)
The result illustrates what the code does. ToString() shows bits from right to left, so bit #0 is to the far right. In line 2 and 3 below, two individual bits were set without tampering with the others. In the last line, a bit was cleared.
1100001101110 1100001111110 1100001111111 1100001111101
