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 # TstBitLnMask

 Last update: 17.07.2025 

Returns whether at least one of the bits defined in mask is set in the input.

## Interface

NameKindTypeCommentNPN/ASize of the bit-fieldbfIunsigned<<N>>Input bit-fieldmaskIunsigned<<N>>Mask used to test the bitsvOboolResult of the operation**Parent topic:**[Bitfield](../../libraries/bitfield/bitfield.md)