Math::NumSeq::Factorials -- factorials 1*2*...*i
use Math::NumSeq::Factorials; my $seq = Math::NumSeq::Factorials->new; my ($i, $value) = $seq->next;
The sequence of factorials, 1, 2, 6, 24, 120, etc, being the product 1*2*3*...*i.
See "FUNCTIONS" in Math::NumSeq for the behaviour common to all path classes.
$seq = Math::NumSeq::Factorials->new (key=>value,...)
Create and return a new sequence object.
$value = $seq->ith($i)
Return 1*2*...*$i. For $i==0 this is considered an empty product and the return is 1.
1*2*...*$i
$i==0
$bool = $seq->pred($value)
Return true if $value is a factorial, ie. equal to 1*2*...*i for some i.
$value
1*2*...*i
Math::NumSeq, Math::NumSeq::Primorials
http://user42.tuxfamily.org/math-numseq/index.html
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/>.
To install Math::NumSeq, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Math::NumSeq
CPAN shell
perl -MCPAN -e shell install Math::NumSeq
For more information on module installation, please visit the detailed CPAN module installation guide.