1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
# -*- mode: perl; -*-
use strict;
use warnings;
use Test::More tests => 66;
# Default: upgrade => "Math::BigFloat", downgrade => "Math::BigInt";
use bignum upgrade => "Math::BigRat";
my $class = "Math::BigInt";
my $x;
###############################################################################
note("inf tests");
$x = 1 + inf;
note("\n\n" . $x . "\n\n");
$x = 1 + inf;
is(ref($x), $class, "\$x = 1 + inf makes a $class");
is($x->bstr(), "inf", '$x = 1 + inf; $x->bstr() = "inf"');
$x = 1 * inf;
is(ref($x), $class, "\$x = 1 * inf makes a $class");
is($x->bstr(), "inf", '$x = 1 * inf; $x->bstr() = "inf"');
# these don't work without exporting inf()
$x = inf;
is(ref($x), $class, "\$x = inf makes a $class");
is($x->bstr(), "inf", '$x = inf; $x->bstr() = "inf"');
$x = inf + inf;
is(ref($x), $class, "\$x = inf + inf makes a $class");
is($x->bstr(), "inf", '$x = inf + inf; $x->bstr() = "inf"');
$x = inf * inf;
is(ref($x), $class, "\$x = inf * inf makes a $class");
is($x->bstr(), "inf", '$x = inf * inf; $x->bstr() = "inf"');
###############################################################################
note("NaN tests");
$x = 1 + NaN;
is(ref($x), $class, "\$x = 1 + NaN makes a $class");
is($x->bstr(), "NaN", '$x = 1 + NaN; $x->bstr() = "NaN"');
$x = 1 * NaN;
is(ref($x), $class, "\$x = 1 * NaN makes a $class");
is($x->bstr(), "NaN", '$x = 1 * NaN; $x->bstr() = "NaN"');
# these don't work without exporting NaN()
$x = NaN;
is(ref($x), $class, "\$x = NaN makes a $class");
is($x->bstr(), "NaN", '$x = NaN; $x->bstr() = "NaN"');
$x = NaN + NaN;
is(ref($x), $class, "\$x = NaN + NaN makes a $class");
is($x->bstr(), "NaN", '$x = NaN + NaN; $x->bstr() = "NaN"');
$x = NaN * NaN;
is(ref($x), $class, "\$x = NaN * NaN makes a $class");
is($x->bstr(), "NaN", '$x = NaN * NaN; $x->bstr() = "NaN"');
###############################################################################
note("mixed tests");
# these don't work without exporting NaN() or inf()
$x = NaN + inf;
is(ref($x), $class, "\$x = NaN + inf makes a $class");
is($x->bstr(), "NaN", '$x = NaN + inf; $x->bstr() = "NaN"');
$x = NaN * inf;
is(ref($x), $class, "\$x = NaN * inf makes a $class");
is($x->bstr(), "NaN", '$x = NaN * inf; $x->bstr() = "NaN"');
$x = inf * NaN;
is(ref($x), $class, "\$x = inf * NaN makes a $class");
is($x->bstr(), "NaN", '$x = inf * NaN; $x->bstr() = "NaN"');
###############################################################################
# inf and NaN as strings.
for my $nan (qw/ nan naN nAn nAN Nan NaN NAn NAN /) {
my $x = 1 + $nan;
is($x->bstr(), "NaN", qq|\$x = 1 + "$nan"|);
is(ref($x), $class, "\$x is a $class");
}
for my $inf (qw/ inf inF iNf iNF Inf InF INf INF
infinity Infinity InFiNiTy iNfInItY
/)
{
my $x = 1 + $inf;
is($x->bstr(), "inf", qq|\$x = 1 + "$inf"|);
is(ref($x), $class, "\$x is a $class");
}
|
