Commit Graph

8 Commits

Author SHA1 Message Date
Jung-uk Kim
ee4526c085 Make dc(1) buildable. 2018-09-19 07:08:27 +00:00
Alan Somers
95639a80ef dc(1): fix input of non-decimal fractional numbers
Inputting fractional non-decimal numbers has never worked correctly in our
OpenBSD-derived dc(1). It truncates the input to a number of decimal places
equal to the number of hexadecimal (or whatever base) places given on the
input. That's unacceptable, because many numbers require more precision to
represent in base 10 than in their original bases.

Fix this bug by using as many decimal places as needed to represent the
input, up to the maximum of the global scale factor.

This has one mildly surprising side effect: the scale of a number entered in
non-decimal mode will no longer necessarily equal the number of hexadecimal
(or whatever base) places given on the input. I think that's an acceptable
behavior change, given that inputting fractional non-decimal numbers never
worked in the first place, and the man page doesn't specify whether trailing
zeros on the input should affect a number's scale.

PR:		206230
Reported by:	nibbana@gmx.us
Reviewed by:	pfg
Differential Revision:	https://reviews.freebsd.org/D13336
2017-12-05 04:22:35 +00:00
Alan Somers
9ccdc62331 Reap dead code
usr.bin/dc/inout.c
	Reap some dead code that was killed back in 2003 in OpenBSD, in
	version 1.8 of this file.

MFC after:	3 weeks
2017-12-02 06:05:03 +00:00
Pedro F. Giffuni
63433bc937 bc/dc/patch: make some use of reallocarray(3).
reallocarray(3) is a non portable extension from OpenBSD. Given that it is
already in FreeBSD, make easier future merges by adopting in some cases
where the code has some shared heritage with OpenBSD.

Obtained from:	OpenBSD
2017-03-05 16:10:35 +00:00
Xin LI
be848c7a13 Sync with OpenBSD.
MFC after:	2 weeks
2014-04-16 23:14:05 +00:00
Kevin Lo
c3761c3848 - Use BN_set_negative() and BN_is_negative() instead of subtracting or
comparing to zero.
- Fix fractional number exponentiation, especially for negative exponents.

Obtained from:	OpenBSD
2012-12-30 15:20:27 +00:00
Gabor Kovesdan
7121df6349 - style(9)
Approved by:	delphij (mentor)
2010-02-03 21:06:13 +00:00
Gabor Kovesdan
fdf1f88bce Replace GNU bc/dc with BSDL versions ported from OpenBSD. They have a good
compatibility level with the GNU counterparts and have shown to be mature
enough. For now, the GNU versions aren't removed from the tree, just detached
from the build.

Sponsored by:		Google Summer of Code 2008
Portbuild run by:	erwin
Approved by:		delphij
2010-01-20 21:30:52 +00:00