Revision history for Math::BigInt::Pari

2002-03-23 v1.08 Tels
 - testsuite from MBI v1.55
 - prerequisite fixed
2002-02-21 v1.07 Tels
 - Math::Pari has _hex_cvt(), which makes from_hex() fast, but doesn't have
   something for from_bin(). Now _from_bin() repacks the input as hex number
   and then passes it to _hex_cvt().
 - tests from Math::BigInt v1.51
 - replaced _core_lib() by config()->{lib}

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.
