Math::NumSeq::Cubes -- cubes i**3


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


The sequence of cubes i**3,

    0, 1, 8, 27, 64, 125, ...


See "FUNCTIONS" in Math::NumSeq for behaviour common to all sequence classes.

$seq = Math::NumSeq::Cubes->new ()

Create and return a new sequence object.


($i, $value) = $seq->next()

Return the next index and value in the sequence.

If $value overflows a usual Perl UV integer the return is promoted to Math::BigInt to preserve all bits.


Move the current sequence position to $i. The next call to next() will return $i and corresponding value.


Move the current sequence position so that next() will give $value on the next call, or if $value is not a cube then the next cube above $value.

Random Access

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

Return $i*$i*$i.

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

Return true if $value is a cube.

$i = $seq->value_to_i_ceil($value)
$i = $seq->value_to_i_floor($value)

Return the cube root of $value, rounded up or down to the next integer.

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

Return an estimate of the i corresponding to $value.


Math::NumSeq, Math::NumSeq::Squares



Copyright 2010, 2011, 2012, 2013, 2014, 2016, 2019, 2020 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 <>.