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Upgrade Math::BigInt from 1.999701 to 1.999704
[perl5.git] / cpan / Math-BigInt / t / bigroot.t
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06ce15ad 1#!perl
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2
3# Test broot function (and bsqrt() function, since it is used by broot()).
4
5# It is too slow to be simple included in bigfltpm.inc, where it would get
6# executed 3 times.
7
8# But it is better to test the numerical functionality, instead of not testing
9# it at all.
10
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SH
11use strict; # restrict unsafe constructs
12use warnings; # enable optional warnings
13
4aa37faf 14use Test::More tests => 4 * 2;
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15
16use Math::BigFloat;
17use Math::BigInt;
18
19my $cl = "Math::BigFloat";
20my $c = "Math::BigInt";
21
22# 2 ** 240 =
23# 1766847064778384329583297500742918515827483896875618958121606201292619776
24
25# takes way too long
26#test_broot ('2','240', 8, undef, '1073741824');
27#test_broot ('2','240', 9, undef, '106528681.3099908308759836475139583940127');
28#test_broot ('2','120', 9, undef, '10321.27324073880096577298929482324664787');
29#test_broot ('2','120', 17, undef, '133.3268493632747279600707813049418888729');
30
31test_broot ('2','120', 8, undef, '32768');
32test_broot ('2','60', 8, undef, '181.0193359837561662466161566988413540569');
33test_broot ('2','60', 9, undef, '101.5936673259647663841091609134277286651');
34test_broot ('2','60', 17, undef, '11.54672461623965153271017217302844672562');
35
36sub test_broot
37 {
38 my ($x,$n,$y,$scale,$result) = @_;
39
40 my $s = $scale || 'undef';
50109ad0 41 is ($cl->new($x)->bpow($n)->broot($y,$scale),$result, "Try: $cl $x->bpow($n)->broot($y,$s) == $result");
3a427a11 42 $result =~ s/\..*//;
50109ad0 43 is ($c->new($x)->bpow($n)->broot($y,$scale),$result, "Try: $c $x->bpow($n)->broot($y,$s) == $result");
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44 }
45