File Coverage

lib/Spreadsheet/Engine/Function/PV.pm

Criterion	Covered	Total	%
statement	15	15	100.0
branch	3	6	50.0
condition	1	2	50.0
subroutine	4	4	100.0
pod	1	1	100.0
total	24	28	85.7

package Spreadsheet::Engine::Function::PV;

use strict;
use warnings;

use base 'Spreadsheet::Engine::Fn::investment';

sub calculate {
  my ($self, $rate, $n, $payment, $fv, $type) = @_;
  $fv ||= 0;
  $type = $type ? 1 : 0;

  die Spreadsheet::Engine::Error->div0 if $rate == -1;
  return -$fv - ($payment * $n) if $rate == 0;
  return (
    -$fv - $payment * (1 + $rate * $type) * ((1 + $rate)**$n - 1) / $rate) /
    ((1 + $rate)**$n);
}

1;

__END__