50 lines
1.6 KiB
Perl
50 lines
1.6 KiB
Perl
#!/usr/bin/perl -w
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# Test broot function (and bsqrt() function, since it is used by broot()).
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# It is too slow to be simple included in bigfltpm.inc, where it would get
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# executed 3 times.
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# But it is better to test the numerical functionality, instead of not testing
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# it at all.
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use strict;
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use Test::More;
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BEGIN {
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plan skip_all => "requires Math::BigInt 1.997+" unless eval { require Math::BigInt && eval($Math::BigInt::VERSION) >= 1.997 };
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plan tests => 1 + 4 * 2;
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}
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use Math::BigFloat only => 'LTM';
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use Math::BigInt;
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is (Math::BigInt->config()->{lib}, 'Math::BigInt::LTM', 'LTM loaded');
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my $cl = "Math::BigFloat";
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my $c = "Math::BigInt";
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# 2 ** 240 =
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# 1766847064778384329583297500742918515827483896875618958121606201292619776
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# takes way too long
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#test_broot ('2','240', 8, undef, '1073741824');
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#test_broot ('2','240', 9, undef, '106528681.3099908308759836475139583940127');
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#test_broot ('2','120', 9, undef, '10321.27324073880096577298929482324664787');
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#test_broot ('2','120', 17, undef, '133.3268493632747279600707813049418888729');
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test_broot ('2','120', 8, undef, '32768');
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test_broot ('2','60', 8, undef, '181.0193359837561662466161566988413540569');
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test_broot ('2','60', 9, undef, '101.5936673259647663841091609134277286651');
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test_broot ('2','60', 17, undef, '11.54672461623965153271017217302844672562');
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sub test_broot
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{
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my ($x,$n,$y,$scale,$result) = @_;
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my $s = $scale || 'undef';
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is ($cl->new($x)->bpow($n)->broot($y,$scale),$result, "Try: $cl $x->bpow($n)->broot($y,$s) == $result");
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$result =~ s/\..*//;
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is ($c->new($x)->bpow($n)->broot($y,$scale),$result, "Try: $c $x->bpow($n)->broot($y,$s) == $result");
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}
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