simon-git: spigot (master): Simon Tatham

[Commits to Tartarus CVS repository.]

TL;DR:
  d4a70b1 Debug facility for a single spigot.
  72fa2fb Use mpz_tdiv_* in place of mpz_div.
  f4d0979 Normalise signs in spigot_rational().

Repository:     git://git.tartarus.org/simon/spigot.git
On the web:     http://tartarus.org/~simon-git/gitweb/?p=spigot.git
Branch updated: master
Committer:      Simon Tatham <anakin at pobox.com>
Date:           2014-12-15 17:02:06

commit d4a70b12d12f6315efde3e7f2d637401eb6eba28
web diff http://tartarus.org/~simon-git/gitweb/?p=spigot.git;a=commitdiff;h=d4a70b12d12f6315efde3e7f2d637401eb6eba28;hp=0fdbeaf00bb127e90eaed270968a98d37342cbeb
Author: Simon Tatham <anakin at pobox.com>
Date:   Mon Dec 15 16:17:31 2014 +0000

    Debug facility for a single spigot.
    
    This isn't used in the normal running of the program, but if I find a
    computation going wrong, I can insert a single s->enable_debug() call
    in an appropriate part of the code to get a dump of just _that_
    spigot's matrix manipulations to standard output.

 spigot.cpp |   43 ++++++++++++++++++++++++++++++++++++++++++-
 spigot.h   |    7 +++++++
 2 files changed, 49 insertions(+), 1 deletion(-)

commit 72fa2fb63e288e31750f62c12a82c048ef257bf5
web diff http://tartarus.org/~simon-git/gitweb/?p=spigot.git;a=commitdiff;h=72fa2fb63e288e31750f62c12a82c048ef257bf5;hp=d4a70b12d12f6315efde3e7f2d637401eb6eba28
Author: Simon Tatham <anakin at pobox.com>
Date:   Mon Dec 15 16:52:44 2014 +0000

    Use mpz_tdiv_* in place of mpz_div.
    
    I had intended my 'bigint' class to have / and % operators following
    the usual C semantics (division rounded towards zero, hence remainder
    with the same sign as the numerator), but apparently mpz_div doesn't
    actually have those semantics. Switch mpz_div and mpz_mod to
    mpz_tdiv_{q,r}, which do.

 bi_gmp.h |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

commit f4d09798f4e5979d75474735c499b7b65f276489
web diff http://tartarus.org/~simon-git/gitweb/?p=spigot.git;a=commitdiff;h=f4d09798f4e5979d75474735c499b7b65f276489;hp=72fa2fb63e288e31750f62c12a82c048ef257bf5
Author: Simon Tatham <anakin at pobox.com>
Date:   Mon Dec 15 16:37:27 2014 +0000

    Normalise signs in spigot_rational().
    
    The gcd loop in spigot_rational() was accidentally depending on the
    wrong semantics of mpz_div(), which I've just fixed.

 bi_gmp.h      |    2 ++
 bi_internal.h |    2 ++
 rational.cpp  |    2 +-
 3 files changed, 5 insertions(+), 1 deletion(-)