bitset.9: add description of BIT_ISSET

Extracted from abandoned review https://reviews.freebsd.org/D33701.

MFC after:	3 days
This commit is contained in:
Doug Moore 2022-01-06 13:14:18 +01:00 committed by Stefan Eßer
parent a2523baed5
commit 145c65fc57

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@ -256,6 +256,16 @@ is composed of multiple machine words,
performs multiple individually atomic operations.)
.Pp
The
.Fn BIT_ISSET
macro returns
.Dv true
if the bit
.Fa bit
in the bitset pointed to by
.Fa bitset
is set.
.Pp
The
.Fn BIT_SET
macro sets bit
.Fa bit