wanted: interface for signed modular arithmetic
Bug #797132 reported by
Nikodemus Siivola
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
SBCL |
Triaged
|
Medium
|
Unassigned |
Bug Description
Subject: Re: sb-c::mask-
Nikodemus Siivola <email address hidden> writes:
> ...is required for signed modular arithmetic. Is there a reason we're
> not exporting it?
It's a bit of a rubbish interface -- it's not at all like LDB or
LOGAND. I think having SLDB (modulo naming collisions) for extracting a
bitfield and interpreting the top bit as the sign bit, and maybe SLOGAND
as well, would make me feel better about exporting those.
That's why I've never exported mask-signed-field, anyway.
C.
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