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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)
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Nearby terms:
bitmap display « bitmap font « bitmapped display « bit mask » BITNET » bitonal image » bit-paired keyboard
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
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