Revision history for Math::BigInt::Pari
2002-02-10 v1.06 Tels
- _lsft() and _rsft() do now bases != 2, too
- tests are now from v1.50
- added _fac() for faster factorial() (used from MBI v1.50 onwards)
#!/usr/bin/perl -w
use lib 'lib';
use Math::BigInt lib => 'Pari';
use Benchmark; my $c = 20000;
my $x = Math::BigInt->new(1); my $z = $x->copy()->blsft($c); my $x1 = Math::BigInt->new(1); my $z1 = $x->copy()->blsft($c*10);
timethese ( -3, {
right_1_10 => sub { $x->brsft(1,10); },
left_1_10 => sub { $z->blsft(1,10); },
right_10_10 => sub { $x1->blsft(10,10); },
left_10_10 => sub { $z1->brsft(10,10); }, } );
Results (operations per second) on a 1Ghz Athlon:
v1.05 v1.06 Factor
-------------------------------------
left_10_10: 1990 6000 3.0
left_1_10: 2280 5150 2.2
right_10_10: 1130 1560 1.4
right_1_10: 2570 6433 2.5
2001-11-11 v1.05 Tels
- fixed _inc() and _dec() so that they can be used by MBI v1.46
2001-11-01 v1.04 Tels
- tests from BigInt v1.45
- added _mod() for faster % operator (about two times faster now)
- added _lsft() and _rsft() for faster shifting
#!/usr/bin/perl -w
use lib 'lib';
use Math::BigInt lib => 'Pari';
use Benchmark;
my $c = 20000;
my $x = Math::BigInt->new(1); my $z = $x->copy()->blsft($c);
my $x1 = Math::BigInt->new(1); my $z1 = $x->copy()->blsft($c*10);
timethese ( $c, {
right_1 => sub { $x->brsft(1,2); },
left_1 => sub { $z->blsft(1,2); },
right_10 => sub { $x1->blsft(10,2); },
left_10 => sub { $z1->brsft(10,2); }, } );
Results (operations per second) on a 1Ghz Athlon:
v1.03 v1.04 Factor
-------------------------------------
left_1: 2577 6450 2.5
left_10: 881 3086 3.5
right_1: 2928 6990 2.4
right_10: 2020 5465 2.7
1.03 2001.09.02 btrott
- Incorporated Tels's changes: no longer need to EXPORT_OK functions;
added empty import method.
- Added _as_hex and _as_bin implementations for Math::Pari integers,
to support as_hex and as_bin Math::BigInt methods.
1.02 2001.08.05 btrott
- Added _gcd method; uses PARI library function to return gcd.
- Incorporated Tels's changes: _copy() is now linear; _is_zero,
_is_one, is_even, and is_odd now use PARI library functions
rather than overloaded ops and should thus be faster. Also
added new tests from Math::BigInt 1.40.
1.01 2001.07.14 btrott
- Incorporated Tels's changes per calling args to plugin methods
(now class is *always* the first arg, so no more checking).
Fixed some tests per Math::BigInt changes.
1.00 2001.07.11 btrott
- Initial release.