open DEBUG, ">.compute.log" or die $!;
DEBUG->autoflush(1);
-$SIG{__WARN__} = sub {
+sub debug_dump () {
print DEBUG Dumper(\%tie,
\@non_transferable,
\%cands,
\@allvotes,
$stage, $quota);
+}
+
+$SIG{__WARN__} = sub {
+ $SIG{__DIE__} = undef;
+ debug_dump;
confess $_[0];
};
+$SIG{__DIE__} = sub {
+ debug_dump;
+ die $_[0];
+};
+
sub unkopt ($$) {
my ($what,$opt) = @_;
if ($opt =~ m/^[A-Z]/) {
$cands{$_}{Cand} = $_ foreach keys %cands;
$_->{Weight} //= 1/1 foreach @allvotes;
$_->{TransferredSurplus} //= [ ] foreach @allvotes;
+$_->{OrigPrefs} //= [ @{ $_->{Prefs} } ] foreach @allvotes;
sub votelog ($$) {
my ($vote,$m) = @_;
# Strips that first preference from the ballot.
# If the first preference has been eliminated, strips it
# and looks for further preferences.
+ print DEBUG "sortballots ".(scalar @_)."...\n";
foreach my $v (@_) {
my $firstprefs = shift @{ $v->{Prefs} };
my $w = $v->{Weight};
}
sub countballots () {
- foreach my $cand (sort keys %cands) {
- my $c = $cands{$cand};
+ foreach my $c (values %cands) {
next if $c->{NonCont};
- $c->{Total} = 0;
+ $c->{Total} = 0/1;
$c->{Total} += $_->{Weight} foreach @{ $c->{Votes} };
- prf "candidate %-10s: %10s votes\n", $cand, $c->{Total};
+ print DEBUG "counted $c->{Cand} $c->{Total}\n";
$c->{History}[$stage-1] = $c->{Total};
}
+
+ foreach my $c (reverse sort total_history_cmp
+ grep { !$_->{NonCont} } values %cands) {
+ prf "candidate %-10s: %10s votes\n", $c->{Cand}, $c->{Total};
+ }
}
sub computequota () {
- my $totalvalid = 0;
+ my $totalvalid = 0/1;
$totalvalid += $_->{Total} foreach values %cands;
$quota = ($totalvalid / (1 + $seats)) -> bfloor();
prf "quota %10s\n", $quota;
sub total_history_cmp () {
my $ha = $a->{History};
my $hb = $b->{History};
+ my $m = "stage $stage history cmp $a->{Cand} $b->{Cand}";
+ print DEBUG "$m...\n";
foreach my $s (reverse 0 .. $stage-1) {
my $d = $ha->[$s] <=> $hb->[$s];
next unless $d;
- print DEBUG "history cmp $a->{Cand} $b->{Cand}".
- " => $d (#$s $ha->[$s] $hb->[$s])\n";
+ print DEBUG "$m => $d (#$s $ha->[$s] $hb->[$s])\n";
return $d;
}
+ print DEBUG "$m => 0\n";
return 0;
}
for (;;) {
my $nextc = $maybe[$nequal];
+ last unless $nextc;
# Only interested in those who compare equal according to the
# history (SLGEO 49(2)); NB our history includes the current
# round.
last if $signum*($a = $maybe[0], $b = $nextc, total_history_cmp) > 0;
- $nextc++;
+ $nequal++;
}
if ($nequal > 1 && !$wanttiebreak->($maybe[0]{Total})) {
$c->{NonCont} = 'Elected';
}
-$stage = 1;
-
-sortballots @allvotes;
-countballots();
-computequota();
+$stage = 0;
for (;;) {
$stage++;
+ sortballots @allvotes if $stage == 1;
+
my $seats_remain = $seats
- grep { ($_->{NonCont} // '') eq 'Elected' } values %cands;
if (continuing() <= $seats_remain) {
countballots();
+ computequota if $stage == 1;
+
my $c = select_best_worst
sub { $_->{Total} >= $quota },
sub { $_ > $quota },
# SLGEO 48
my $surplus = $c->{Total} - $quota;
- if ($surplus <= 0) {
+ if ($surplus <= 0/1) {
prf "no surplus\n";
next;
}
prf "transfer value of ballots %s: %10s\n",
"@$previously", $xfervalue;
}
- sortballots $v;
}
+ sortballots @{ $c->{Votes} };
+
$c->{Votes} = { }; # will crash if we access it again
next;
}
-1, 'eliminating';
if ($c) {
- prf "=== eliminating %s (%s) ===\n", $c->{Cand}, $c->{Desc};
+ prf "=== eliminating %s \`%s' ===\n", $c->{Cand}, $c->{Desc};
$c->{NonCont} = 'Eliminated';
+
+ sortballots @{ $c->{Votes} };
next;
}