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package Math::ScientificNotation::Util; |
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3
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our $DATE = '2016-06-17'; # DATE |
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our $VERSION = '0.002'; # VERSION |
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1
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1
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363
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use Exporter qw(import); |
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1
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1
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180
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7
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our @EXPORT_OK = qw(sci2dec); |
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9
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sub sci2dec { |
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18
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18
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1
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30
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my $num = shift; |
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50
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34
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die "Please specify a number" unless defined $num; |
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100
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74
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if ($num =~ /\A(?:[+-]?)(?:\d+\.|\d*\.(\d+))[eE]([+-]?\d+)\z/) { |
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50
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16
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50
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53
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my $num_digs_after_dec = length($1 || "") - $2; |
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16
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100
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$num_digs_after_dec = 0 if $num_digs_after_dec < 0; |
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16
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136
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return sprintf("%.${num_digs_after_dec}f", $num); |
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} elsif ($num =~ /\A[+-]?(?:\d+\.?|\d*\.\d+)\z/) { |
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# already in decimal notation |
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2
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return $num; |
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} else { |
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0
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die "Not a decimal number: $num"; |
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} |
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} |
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25
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1; |
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# ABSTRACT: Utilities related to scientific notation |
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__END__ |