NAME
Math::PlanePath::Base::Generic  various path helpers
SYNOPSIS
use Math::PlanePath::Base::Generic 'round_nearest';
$x = round_nearest($x);
DESCRIPTION
This is a few generic helper functions for the PlanePath code. They're designed to work on plain Perl integers and floats and in some cases there's some special support for Math::BigInt
.
EXPORTS
Nothing is exported by default but each function below can be as in the usual Exporter style,
use Math::PlanePath::Base::Generic 'round_nearest';
(But not parameter_info_nstart0()
and parameter_info_nstart1()
, for the reason described below.)
FUNCTIONS
Generic
$x = round_nearest ($x)

Return
$x
rounded to the nearest integer. If$x
is half way, such as 2.5 then it's round upwards to 3.$x = round_nearest($x);
$href = Math::PlanePath::Base::Generic::parameter_info_nstart0()
$href = Math::PlanePath::Base::Generic::parameter_info_nstart1()

Return an
n_start
parameter hashref suitable for use in aparameter_info_array()
, with default either 0 or 1. For example,# alone package Math::PlanePath::MySubclass; use constant parameter_info_array => [ Math::PlanePath::Base::Generic::parameter_info_nstart1() ]; # or with other parameters too package Math::PlanePath::MySubclass; use constant parameter_info_array => [ { name => 'something', type => 'integer', default => '123', }, Math::PlanePath::Base::Generic::parameter_info_nstart1(), ];
This function is not exportable since it's meant for a oneoff call in an initializer and so no need to import it for repeated use.
SEE ALSO
Math::PlanePath, Math::PlanePath::Base::Digits, Math::PlanePath::Base::NSEW
HOME PAGE
http://user42.tuxfamily.org/mathplanepath/index.html
LICENSE
Copyright 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Kevin Ryde
This file is part of MathPlanePath.
MathPlanePath 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.
MathPlanePath 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 MathPlanePath. If not, see <http://www.gnu.org/licenses/>.