NAME

Math::NumSeq::Factorials -- factorials 1*2*...*i

SYNOPSIS

use Math::NumSeq::Factorials;
my $seq = Math::NumSeq::Factorials->new;
my ($i, $value) = $seq->next;

DESCRIPTION

The sequence of factorials, 1, 2, 6, 24, 120, etc, being the product 1*2*3*...*i.

FUNCTIONS

$seq = Math::NumSeq::Factorials->new (key=>value,...)

Create and return a new sequence object.

$value = $seq->ith($i)

Return 1*2*...*$i. For $i==0 this is considered an empty product and the return is 1.

$bool = $seq->pred($value)

Return true if $value is equal to 1*2*...*i for some i.

SEE ALSO

Math::NumSeq, Math::NumSeq::Primorials

HOME PAGE

http://user42.tuxfamily.org/math-numseq/index.html

LICENSE

Copyright 2010, 2011 Kevin Ryde

Math-NumSeq is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version.

Math-NumSeq is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with Math-NumSeq. If not, see <http://www.gnu.org/licenses/>.