#!/usr/bin/perl -w
# Copyright 2010, 2011, 2012 Kevin Ryde
# This file is part of Math-NumSeq.
#
# 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/>.
use 5.010;
use strict;
use warnings;
use Math::Libm 'log10';
# uncomment this to run the ### lines
use Smart::Comments;
{
# value_to_i_estimate()
require Math::NumSeq::Repdigits;
foreach my $radix (2,3,4,5,10,16,37) {
my $seq = Math::NumSeq::Repdigits->new (radix => $radix);;
my $target = 2;
for (1 .. 100) {
my ($i, $value) = $seq->next;
if ($i >= $target) {
$target *= 1.1;
# require Math::BigRat;
# $value = Math::BigRat->new($value);
# require Math::BigFloat;
# $value = Math::BigFloat->new($value);
my $est_i = $seq->value_to_i_estimate($value);
my $factor = $est_i / $i;
printf "%d %d %.10s factor=%.3f\n",
$i, $est_i, $value, $factor;
}
}
}
exit 0;
}
{
require Math::NumSeq::RepdigitAny;
require Math::NumSeq::RepdigitRadix;
my $rany = Math::NumSeq::RepdigitAny->new (hi => 9999);
my $rb = Math::NumSeq::RepdigitRadix->new (hi => 9999);
foreach (1 .. 20) {
my ($i,$value) = $rany->next;
$value = $i;
my $base = $rb->ith($value);
print "$base,";
}
print "\n";
exit 0;
}
{
require App::MathImage::Generator;
my $gen = App::MathImage::Generator->new (fraction => '5/29',
polygonal => 3);
my $iter = $gen->values_make_repdigit_any_base(1,10000000);
my @hist;
while (defined (my $n = $iter->())) {
$hist[int(log10($n))]++;
}
my $prev_log = 0;
foreach my $count (@hist) {
my $log = log10($count);
my $diff = $log - $prev_log;
print "$count $log $diff\n";
$prev_log = $log;
}
exit 0;
}