round.t

source of perl for linux application,

#!/usr/bin/perl -w

# test rounding with non-integer A and P parameters

use strict;
use Test::More;

BEGIN
  {
  $| = 1;
  # to locate the testing files
  my $location = $0; $location =~ s/round.t//i;
  if ($ENV{PERL_CORE})
    {
    # testing with the core distribution
    @INC = qw(../t/lib);
    }
  unshift @INC, qw(../lib);
  if (-d 't')
    {
    chdir 't';
    require File::Spec;
    unshift @INC, File::Spec->catdir(File::Spec->updir, $location);
    }
  else
    {
    unshift @INC, $location;
    }
  print "# INC = @INC\n";

  plan tests => 95;
  } 

use Math::BigFloat;

my $cf = 'Math::BigFloat';
my $ci = 'Math::BigInt';

my $x = $cf->new('123456.123456');

# unary ops with A
_do_a($x, 'round', 3, '123000');
_do_a($x, 'bfround', 3, '123500');
_do_a($x, 'bfround', 2, '123460');
_do_a($x, 'bfround', -2, '123456.12');
_do_a($x, 'bfround', -3, '123456.123');

_do_a($x, 'bround', 4, '123500');
_do_a($x, 'bround', 3, '123000');
_do_a($x, 'bround', 2, '120000');

_do_a($x, 'bsqrt', 4, '351.4');
_do_a($x, 'bsqrt', 3, '351');
_do_a($x, 'bsqrt', 2, '350');

# setting P
_do_p($x, 'bsqrt', 2,  '350');
_do_p($x, 'bsqrt', -2, '351.36');

# binary ops
_do_2_a($x, 'bdiv', 2, 6, '61728.1');
_do_2_a($x, 'bdiv', 2, 4, '61730');
_do_2_a($x, 'bdiv', 2, 3, '61700');

_do_2_p($x, 'bdiv', 2, -6, '61728.061728');
_do_2_p($x, 'bdiv', 2, -4, '61728.0617');
_do_2_p($x, 'bdiv', 2, -3, '61728.062');

# all tests done

#############################################################################

sub _do_a
  { 
  my ($x, $method, $A, $result) = @_;

  is ($x->copy->$method($A), $result, "$method($A)");
  is ($x->copy->$method($A.'.1'), $result, "$method(${A}.1)");
  is ($x->copy->$method($A.'.5'), $result, "$method(${A}.5)");
  is ($x->copy->$method($A.'.6'), $result, "$method(${A}.6)");
  is ($x->copy->$method($A.'.9'), $result, "$method(${A}.9)");
  }

sub _do_p
  { 
  my ($x, $method, $P, $result) = @_;

  is ($x->copy->$method(undef,$P), $result, "$method(undef,$P)");
  is ($x->copy->$method(undef,$P.'.1'), $result, "$method(undef,${P}.1)");
  is ($x->copy->$method(undef,$P.'.5'), $result, "$method(undef.${P}.5)");
  is ($x->copy->$method(undef,$P.'.6'), $result, "$method(undef,${P}.6)");
  is ($x->copy->$method(undef,$P.'.9'), $result, "$method(undef,${P}.9)");
  }

sub _do_2_a
  { 
  my ($x, $method, $y, $A, $result) = @_;

  my $cy = $cf->new($y);

  is ($x->copy->$method($cy,$A), $result, "$method($cy,$A)");
  is ($x->copy->$method($cy,$A.'.1'), $result, "$method($cy,${A}.1)");
  is ($x->copy->$method($cy,$A.'.5'), $result, "$method($cy,${A}.5)");
  is ($x->copy->$method($cy,$A.'.6'), $result, "$method($cy,${A}.6)");
  is ($x->copy->$method($cy,$A.'.9'), $result, "$method($cy,${A}.9)");
  }

sub _do_2_p
  { 
  my ($x, $method, $y, $P, $result) = @_;

  my $cy = $cf->new($y);

  is ($x->copy->$method($cy,undef,$P), $result, "$method(undef,$P)");
  is ($x->copy->$method($cy,undef,$P.'.1'), $result, "$method($cy,undef,${P}.1)");
  is ($x->copy->$method($cy,undef,$P.'.5'), $result, "$method($cy,undef.${P}.5)");
  is ($x->copy->$method($cy,undef,$P.'.6'), $result, "$method($cy,undef,${P}.6)");
  is ($x->copy->$method($cy,undef,$P.'.9'), $result, "$method($cy,undef,${P}.9)");
  }