Math::NumSeq::RadixConversion -- radix conversion
use Math::NumSeq::RadixConversion; my $seq = Math::NumSeq::RadixConversion->new (from_radix => 2, to_radix => 10); my ($i, $value) = $seq->next;
This sequence is the index i converted from one radix to another. The default is from binary to decimal,
0, 1, 10, 11, 100, 101, 110, 111, 1000, 1001, 1010, 1011, ... starting i=0
For example i=3 in binary is 0b11 which is interpreted as decimal for value 11, ie. eleven.
from_radix < to_radix the effect is to give values which in
to_radix use only the digits of
from_radix. The default is all integers which in decimal use only the binary digits, ie. 0 and 1.
from_radix > to_radix the conversion is a reduction. The calculation is still a breakdown and re-assembly
i = d[k]*from_radix^k + ... + d*from_radix + d value = d[k]*to_radix^k + ... + d*to_radix + d
to_radix is smaller the value is smaller than the index i. For example from_radix=10 and to_radix=8 turns i=345 into value=3*8^2+4*8+5=229.
See "FUNCTIONS" in Math::NumSeq for behaviour common to all sequence classes.
$seq = Math::NumSeq::RadixConversion->new ()
$seq = Math::NumSeq::RadixConversion->new (from_radix => $r, to_radix => $t)
Create and return a new sequence object.
$value = $seq->ith($i)
$i as digits of base
radix encoded in
$bool = $seq->pred($value)
Return true if
$value occurs in the sequence.
to_radix <= from_radix then all integer
$value occurs. If
to_radix > from_radix then
$value written in
to_radix must use only digits 0 to
from_radix - 1 inclusive.
Copyright 2012, 2013 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.
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