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#!/usr/bin/perl -w
# Copyright 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 Test;
plan tests => 22;
use lib 't','xt';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
use Math::PlanePath::Base::Generic
'is_infinite',
'round_nearest',
'floor';
#------------------------------------------------------------------------------
# is_infinite()
{
my $pos_infinity = 0;
my $neg_infinity = 0;
my $nan = 0;
my $skip_inf;
my $skip_nan;
if (! eval { require Data::Float; 1 }) {
MyTestHelpers::diag ("Data::Float not available");
$skip_inf = 'due to Data::Float not available';
$skip_nan = 'due to Data::Float not available';
} else {
if (Data::Float::have_infinite()) {
$pos_infinity = Data::Float::pos_infinity();
$neg_infinity = Data::Float::neg_infinity();
} else {
$skip_inf = 'due to Data::Float no infinite';
}
if (Data::Float::have_nan()) {
$nan = Data::Float::nan();
MyTestHelpers::diag ("nan is ",$nan);
} else {
$skip_nan = 'due to Data::Float no nan';
}
}
skip ($skip_inf,
!! is_infinite($pos_infinity), 1, '_is_infinte() +inf');
skip ($skip_inf,
!! is_infinite($neg_infinity), 1, '_is_infinte() -inf');
skip ($skip_nan,
!! is_infinite($nan), 1, '_is_infinte() nan');
}
{
require POSIX;
ok (! is_infinite(POSIX::DBL_MAX()), 1, '_is_infinte() DBL_MAX');
ok (! is_infinite(- POSIX::DBL_MAX()), 1, '_is_infinte() neg DBL_MAX');
}
#------------------------------------------------------------------------------
# round_nearest()
ok (round_nearest(-.75), -1);
ok (round_nearest(-.5), 0);
ok (round_nearest(-0.25), 0);
ok (round_nearest(0.25), 0);
ok (round_nearest(1.25), 1);
ok (round_nearest(1.5), 2);
ok (round_nearest(1.75), 2);
ok (round_nearest(2), 2);
#------------------------------------------------------------------------------
# floor()
ok (floor(-.75), -1);
ok (floor(-.5), -1);
ok (floor(-0.25), -1);
ok (floor(0.25), 0);
ok (floor(0.75), 0);
ok (floor(1.25), 1);
ok (floor(1.5), 1);
ok (floor(1.75), 1);
ok (floor(2), 2);
#------------------------------------------------------------------------------
1;
__END__
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