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 # SetBitMask

 Last update: 17.07.2025 

Returns the input with the bits set to 1 as per the corresponding Mask bits when set to value 1 and the remaining bits will retain their original values. This is equivalent to the operator lor.

## Interface

NameKindTypeCommentNPN/ASize of the bit-fieldbfIunsigned&lt;&lt;N&gt;&gt;Input bit-fieldmaskIunsigned&lt;&lt;N&gt;&gt;Mask used to set the bitsvOunsigned&lt;&lt;N&gt;&gt;Result of the operation**Parent topic:**[Bitfield](../../libraries/bitfield/bitfield.md)