xref: /openbsd-src/gnu/usr.bin/perl/cpan/bignum/t/bigfloat.t (revision 256a93a44f36679bee503f12e49566c2183f6181) 
1# -*- mode: perl; -*-
2
3###############################################################################
4
5use strict;
6use warnings;
7
8use Test::More tests => 17;
9
10use bigfloat;
11
12###############################################################################
13# general tests
14
15my $x = 5;
16is(ref($x), 'Math::BigFloat', '$x = 5 makes $x a Math::BigFloat');
17
18$x = 2 + 3.5;
19is($x, 5.5, '2 + 3.5 = 5.5');
20is(ref($x), 'Math::BigFloat', '$x = 2 + 3.5 makes $x a Math::BigFloat');
21
22$x = 2 ** 255;
23is(ref($x), 'Math::BigFloat', '$x = 2 ** 255 makes $x a Math::BigFloat');
24
25is(sqrt(12), '3.464101615137754587054892683011744733886',
26   'sqrt(12)');
27
28is(2/3, "0.6666666666666666666666666666666666666667", '2/3');
29
30#is(2 ** 0.5, 'NaN');   # should be sqrt(2);
31
32is(12->bfac(), 479001600, '12->bfac() = 479001600');
33
34# see if Math::BigFloat constant works
35
36#                     0123456789          0123456789    <- default 40
37#           0123456789          0123456789
38is(1/3, '0.3333333333333333333333333333333333333333', '1/3');
39
40###############################################################################
41# accuracy and precision
42
43is(bigfloat->accuracy(), undef, 'get accuracy');
44bigfloat->accuracy(12);
45is(bigfloat->accuracy(), 12, 'get accuracy again');
46bigfloat->accuracy(undef);
47is(bigfloat->accuracy(), undef, 'get accuracy again');
48
49is(bigfloat->precision(), undef, 'get precision');
50bigfloat->precision(12);
51is(bigfloat->precision(), 12, 'get precision again');
52bigfloat->precision(undef);
53is(bigfloat->precision(), undef, 'get precision again');
54
55is(bigfloat->round_mode(), 'even', 'get round mode');
56bigfloat->round_mode('odd');
57is(bigfloat->round_mode(), 'odd', 'get round mode again');
58bigfloat->round_mode('even');
59is(bigfloat->round_mode(), 'even', 'get round mode again');
60