翻訳と辞書
Words near each other
・ bist
・ bisync
・ bit
・ bit bang
・ bit bashing
・ bit bucket
・ bit decay
・ bit diddling
・ bit error rate
・ bit field
bit mask
・ bit pattern
・ bit plane
・ bit rate
・ bit rot
・ bit slice
・ bit string
・ bit stuffing
・ bit twiddling
・ bit-paired keyboard


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bit mask : FOLDOC
bit mask
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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