Re: Printing with a Specific Scientific Notation Exponent

Update: ikegami++ is right: printf is needed for a more general solution.

use strict;
use warnings;

my $exp = -4;
my $in  = 5e-2;
my $out = $in/10**$exp;
print "$in --> ${out}e${exp}\n";

__END__
0.05 --> 500e-4
[download]

Comment on Re: Printing with a Specific Scientific Notation Exponent Download Code

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Re^2: Printing with a Specific Scientific Notation Exponent by ikegami (Patriarch) on Sep 18, 2008 at 21:14 UTC
Not quite. `5e-010 --> 5e-006e-4` [download] Use `sprintf '%f'` to avoid that problem. `my $out = sprintf('%f', $in/10**$exp);` [download]	[reply] [d/l] [select]