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#!/usr/bin/perl -w
# Copyright 2011, 2012, 2013 Kevin Ryde
# This file is part of Math-PlanePath.
#
# Math-PlanePath 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-PlanePath 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-PlanePath. If not, see <http://www.gnu.org/licenses/>.
use 5.004;
use strict;
use POSIX ();
# uncomment this to run the ### lines
use Devel::Comments;
# my $inf = 2**99999;
# my $nan = $inf/$inf;
# print "$inf, $nan","\n";
# print $nan==$nan,"\n";
# print $nan<=>0,"\n";
# print 0<=>$nan,"\n";
{
use Math::BigFloat;
Math::BigFloat->accuracy(15);
my $n = Math::BigFloat->new(1);
$n->accuracy(50);
$n->batan2(.00000000, 100);
print "$n\n";
exit 0;
}
{
use Math::BigFloat;
my $n = Math::BigFloat->new('1.234567892345678923456789');
$n->accuracy(15);
# my $pi = $n->bpi(undef);
# my $pi = Math::BigFloat->bpi;
$n = Math::BigFloat->new(1);
print "$n\n";
$n->accuracy(10);
my $pi = $n->batan2(.0000001);
print "$pi\n";
exit 0;
}
{
use Math::BigFloat;
# Math::BigFloat->precision(5);
# Math::BigFloat->precision(-5);
Math::BigFloat->accuracy(13);
# my $n = Math::BigFloat->new('123456789.987654321');
my $n = Math::BigFloat->bpi(50);
print "$n\n";
exit 0;
}
{
use Math::BigFloat;
my $n = Math::BigFloat->new(1234);
### accuracy: $n->accuracy()
### precision: $n->precision()
my $global_accuracy = Math::BigFloat->accuracy();
my $global_precision = Math::BigFloat->precision();
### $global_accuracy
### $global_precision
my $global_div_scale = Math::BigFloat->div_scale();
### $global_div_scale
Math::BigFloat->div_scale(500);
$global_div_scale = Math::BigFloat->div_scale();
### $global_div_scale
### div_scale: $n->div_scale
$n = Math::BigFloat->new(1234);
### div_scale: $n->div_scale
exit 0;
}
{
require Math::Complex;
my $c = Math::Complex->new(123);
### $c
print $c,"\n";
print $c * 0,"\n";;
### int: int($c)
print int($c),"\n";;
exit 0;
}
{
require Math::BigRat;
use Math::BigFloat;
Math::BigFloat->precision(2000); # digits right of decimal point
Math::BigFloat->accuracy(2000);
{
my $x = Math::BigRat->new('1/2') ** 512;
print "$x\n";
my $r = sqrt($x);
print "$r\n";
print $r*$r,"\n";
# my $r = 8*$x-3;
# print "$r\n";
}
exit 0;
{
my $x = Math::BigInt->new(2) ** 128 - 1;
print "$x\n";
my $r = 8*$x-3;
print "$r\n";
}
{
my $x = Math::BigRat->new('100000000000000000000'.('0'x200));
$x = $x*$x-1;
print "$x\n";
my $r = sqrt($x);
print "$r\n";
$r = int($r);
print "$r\n";
}
}
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