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
|
# t/10_dadd.t - dadd tests
#
# Copyright (C) 2017 Patrick McDermott
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use strict;
use warnings;
use Test::More;
use Math::Decimal::FastPP qw(dadd dmul drhtz drhfz);
my @tests;
my $a;
my $b;
my $c;
my $i;
@tests = (
# a b c
[ 2 , 2 , "4." ],
[ 1 , 0.23, "1.23"],
[ 0.23, 1 , "1.23"],
[ 1 , -1 , "0." ],
[-1 , 1 , "0." ],
[ 1.23, 4.56, "5.79"],
[-1.23, 4.56, "3.33"],
[-1.23, -4.56, "-5.79"],
[ 0.1 , 0.1 , ".2" ],
[-0.1 , -0.1 , "-.2" ],
[ 0.1 , -0.1 , ".0" ],
[-0.1 , 0.1 , ".0" ],
[ 9.95, 0.52, "10.47"],
);
plan("tests" => scalar(@tests) + 1);
foreach (@tests) {
($a, $b, $c) = @{$_};
is(dadd($a, $b), $c, sprintf("%5.2f + %5.2f = %5.2f", $a, $b, $c));
}
$a = 0;
for ($i = 0; $i < 10000; ++$i) {
$a = dadd($a, 0.01);
}
is($a, "100.00", "adding 0.01 10000 times");
$a = 0;
for ($i = 0; $i < 10000; ++$i) {
$a += 0.01;
}
note("Using native floating-point arithmetic, the result is " . $a .
" (should be 100)");
|
