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javascript-algorithms/src/algorithms/math/bits/updateBit.js at master · juffalow/javascript-algorithms · GitHub
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javascript-algorithms
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src
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algorithms
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math
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bits
/
updateBit.js
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javascript-algorithms
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src
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algorithms
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math
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bits
/
updateBit.js
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/**
*
@param
{
number
} number
*
@param
{
number
} bitPosition - zero based.
*
@param
{
number
} bitValue - 0 or 1.
*
@return
{
number
}
*/
export
default
function
updateBit
(
number
,
bitPosition
,
bitValue
)
{
// Normalized bit value.
const
bitValueNormalized
=
bitValue
?
1
:
0
;
// Init clear mask.
const
clearMask
=
~
(
1
<<
bitPosition
)
;
// Clear bit value and then set it up to required value.
return
(
number
&
clearMask
)
|
(
bitValueNormalized
<<
bitPosition
)
;
}
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