bit mask - definition. What is bit mask
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DATA TYPE
Bitmask; Mask (computers); Bit mask; Image masking; Mask bit; Signal mask; Process signal mask; Bit masking; Sigmask; Signal Mask; Wildcard Netmask; Signal masking; Image mask; Masked image; Masked imaging; Imaging mask; Mask region; Masked region

bit mask         
<programming> A pattern of binary values which is combined with some value using bitwise AND with the result that bits in the value in positions where the mask is zero are also set to zero. For example, if, in C, we want to test if bits 0 or 2 of x are set, we can write int mask = 5; /* binary 101 */ if (x & mask) ... A bit mask might also be used to set certain bits using bitwise OR, or to invert them using bitwise exclusive OR. (1995-05-12)
Mask (computing)         
In computer science, a mask or bitmask is data that is used for bitwise operations, particularly in a bit field. Using a mask, multiple bits in a byte, nibble, word, etc.
masked         
  • An American football player wearing a mask that protects his face from another player's hand
  • A Korean mask worn by a [[Talchum]] performer
  • A protective surgical mask
  • Golden masks excavated from the [[Kalmakareh Cave]] in [[Lorestan]], Iran, first half of first Millennium BC, [[National Museum of Iran]]
  • Asaro mudman]] holding mask, Papua New Guinea
  • recognition]]
  • A [[Peking opera]] mask
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  • Batak]] mask dance at a funeral feast in the [[Dutch East Indies]], 1930s
  • Kwakwaka'wakw ritual mask (painted wood, fiber, and cord)
  • Fang mask]] used for the ''ngil'' ceremony, an inquisitorial search for sorcerers. Wood, [[Gabon]], 19th century
  • Iranian surgical technologist with surgical mask
  • Masks of [[Cameroon]]
  • Anonymous]]'' wear Guy Fawkes masks while protesting against the [[Church of Scientology]], 2008, London
  • Vietnamese young people wear surgic masks after the [[COVID-19 pandemic]]
  • Makeup simulates a half-sided mask on this man for [[Halloween]]
  • The so-called '[[Mask of Agamemnon]]', a 16th-century BC mask discovered by [[Heinrich Schliemann]] in 1876 at [[Mycenae]], Greece, [[National Archaeological Museum, Athens]]
  • Mask of Shame]]"
  • Roman mosaic]], second century AD
  • [[Funeral mask]] of [[K'inich Janaab' Pakal]] at the [[National Museum of Anthropology (Mexico)]]
  • reusable filter mask]] worn by [[NYPD]] officer
  • Greek mask
  • Three photographs of the same [[noh]] mask of a woman show how her expression appears to change with a tilting of the head of the performer - to demonstrate the effect, the mask was affixed to a wall with constant lighting and only the camera was moved
  • Masked dancers at a [[tshechu]] festival, [[Bhutan]], 2013
  • A Venetian carnival mask
  • Aztec mask of [[Xiuhtecuhtli]], c. 1500, of [[Mixtec]]-Aztec provenance
  • Mask of [[Tengu]]
  • Shu]]
ANY FULL OR PARTIAL FACE COVERING, WHETHER CEREMONIAL, PROTECTIVE, DECORATIVE, OR USED AS DISGUISE
Masks; Masked; Masks (protective); Protective masks; Protective mask; Masks in theatre; Masks and theatre; Masks in ritual; Masks in ritual and theatre; Masks in theater and ritual; Ritual mask; SARS mask; SARS Masks; Swine flu mask; Theatre mask; Tribal mask; Flu mask; Face cover; Melanesian masks; Native American masks; SARS Mask; Face covering; Masked theatre
If someone is masked, they are wearing a mask.
Masked youths threw stones and fire-bombs.
ADJ

ويكيبيديا

Mask (computing)

In computer science, a mask or bitmask is data that is used for bitwise operations, particularly in a bit field. Using a mask, multiple bits in a byte, nibble, word, etc. can be set either on or off, or inverted from on to off (or vice versa) in a single bitwise operation. An additional use of masking involves predication in vector processing, where the bitmask is used to select which element operations in the vector are to be executed (mask bit is enabled) and which are not (mask bit is clear).