10 lines
570 B
Perl
10 lines
570 B
Perl
sub continued_fraction {
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my ($a, $b, $n) = (@_[0,1], $_[2] // 100);
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$a->() + ($n && $b->() / continued_fraction($a, $b, $n-1));
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}
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printf "√2 ≈ %.9f\n", continued_fraction do { my $n; sub { $n++ ? 2 : 1 } }, sub { 1 };
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printf "e ≈ %.9f\n", continued_fraction do { my $n; sub { $n++ || 2 } }, do { my $n; sub { $n++ || 1 } };
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printf "π ≈ %.9f\n", continued_fraction do { my $n; sub { $n++ ? 6 : 3 } }, do { my $n; sub { (2*$n++ + 1)**2 } }, 1_000;
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printf "π/2 ≈ %.9f\n", continued_fraction do { my $n; sub { 1/($n++ || 1) } }, sub { 1 }, 1_000;
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