1#!/usr/bin/perl -w
2
3# test the helper math routines in Math::BigFloat
4
5use Test::More;
6use strict;
7
8BEGIN
9  {
10  $| = 1;
11  # to locate the testing files
12  my $location = $0; $location =~ s/_e_math.t//i;
13  if ($ENV{PERL_CORE})
14    {
15    # testing with the core distribution
16    @INC = qw(../lib);
17    }
18  unshift @INC, '../lib';
19  if (-d 't')
20    {
21    chdir 't';
22    require File::Spec;
23    unshift @INC, File::Spec->catdir(File::Spec->updir, $location);
24    }
25  else
26    {
27    unshift @INC, $location;
28    }
29  print "# INC = @INC\n";
30
31  plan tests => 26;
32  }
33
34use Math::BigFloat lib => 'Calc';
35
36#############################################################################
37# add
38
39my $a = Math::BigInt::Calc->_new("123");
40my $b = Math::BigInt::Calc->_new("321");
41
42my ($x, $xs) = Math::BigFloat::_e_add($a,$b,'+','+');
43is (_str($x,$xs), '+444', 'add two positive numbers');
44is (_str($a,''), '444', 'a modified');
45
46($x,$xs) = _add (123,321,'+','+');
47is (_str($x,$xs), '+444', 'add two positive numbers');
48
49($x,$xs) = _add (123,321,'+','-');
50is (_str($x,$xs), '-198', 'add +x + -y');
51($x,$xs) = _add (123,321,'-','+');
52is (_str($x,$xs), '+198', 'add -x + +y');
53
54($x,$xs) = _add (321,123,'-','+');
55is (_str($x,$xs), '-198', 'add -x + +y');
56($x,$xs) = _add (321,123,'+','-');
57is (_str($x,$xs), '+198', 'add +x + -y');
58
59($x,$xs) = _add (10,1,'+','-');
60is (_str($x,$xs), '+9', 'add 10 + -1');
61($x,$xs) = _add (10,1,'-','+');
62is (_str($x,$xs), '-9', 'add -10 + +1');
63($x,$xs) = _add (1,10,'-','+');
64is (_str($x,$xs), '+9', 'add -1 + 10');
65($x,$xs) = _add (1,10,'+','-');
66is (_str($x,$xs), '-9', 'add 1 + -10');
67
68#############################################################################
69# sub
70
71$a = Math::BigInt::Calc->_new("123");
72$b = Math::BigInt::Calc->_new("321");
73($x, $xs) = Math::BigFloat::_e_sub($b,$a,'+','+');
74is (_str($x,$xs), '+198', 'sub two positive numbers');
75is (_str($b,''), '198', 'a modified');
76
77($x,$xs) = _sub (123,321,'+','-');
78is (_str($x,$xs), '+444', 'sub +x + -y');
79($x,$xs) = _sub (123,321,'-','+');
80is (_str($x,$xs), '-444', 'sub -x + +y');
81
82sub _add
83  {
84  my ($a,$b,$as,$bs) = @_;
85
86  my $aa = Math::BigInt::Calc->_new($a);
87  my $bb = Math::BigInt::Calc->_new($b);
88  my ($x, $xs) = Math::BigFloat::_e_add($aa,$bb,$as,$bs);
89  is (Math::BigInt::Calc->_str($x), Math::BigInt::Calc->_str($aa),
90    'param0 modified');
91  ($x,$xs);
92  }
93
94sub _sub
95  {
96  my ($a,$b,$as,$bs) = @_;
97
98  my $aa = Math::BigInt::Calc->_new($a);
99  my $bb = Math::BigInt::Calc->_new($b);
100  my ($x, $xs) = Math::BigFloat::_e_sub($aa,$bb,$as,$bs);
101  is (Math::BigInt::Calc->_str($x), Math::BigInt::Calc->_str($aa),
102    'param0 modified');
103  ($x,$xs);
104  }
105
106sub _str
107  {
108  my ($x,$s) = @_;
109
110  $s . Math::BigInt::Calc->_str($x);
111  }
112