[Bug 206230] dc(1) bugs
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Fri Dec 1 21:04:50 UTC 2017
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=206230
Alan Somers <asomers at FreeBSD.org> changed:
What |Removed |Added
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CC| |asomers at FreeBSD.org
--- Comment #1 from Alan Somers <asomers at FreeBSD.org> ---
The problem is simpler than you suggest. It looks like fractional input
doesn't work correctly when the input base is 16. Try this:
$ dc -xe 16i0.1p
0.0
$ dc -xe 16i0.8p
.5
$ dc -xe 16i0.4p
.2
The first and third results are wrong, and the second result is correct. I get
the same results with both the FreeBSD and the GNU versions of both bc(1) and
dc(1). I suspect the problem is that some number is being treated as an
integer in units of base^n for n < 0 _before_ conversion to a bignum. That
would explain these three results, for n=-1.
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