http://www.perlmonks.org?node_id=11136984


in reply to Re: Padding with sprintf changing number
in thread Padding with sprintf changing number

how to avoid this ..i dont want rounding after padding

  • Comment on Re^2: Padding with sprintf changing number

Replies are listed 'Best First'.
Re^3: Padding with sprintf changing number
by choroba (Cardinal) on Sep 24, 2021 at 11:22 UTC
    What about %016.0f?
    map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
[reply]
[d/l]
[select]

      Thanks Alot for explanation with example and your worked perfectly i have one more Q...my $padacntnum =sprintf("%017d",$bgl) this is going to round off every number ??

[reply]
        It probably is not possible to predict the results in every case. Consider these two runs of your function. Only the second replicates your original problem. 
        use strict;
use warnings;
no warnings 'experimental::signatures';
use feature 'signatures';

sub amnt($amn)
{
my $amount=$_[0];
print "$amount i m checking amount before padding,\n";
my $padamnt = sprintf("%016d",$amount);
print "$padamnt i m checking amount after padding,\n";
 return $padamnt;
}

print "EXACT integer\n";
amnt(488715);

print "\n\nNot quite an integer\n";
amnt(488715 - 4e-10);

        [download]

        OUTPUT:

        EXACT integer
488715 i m checking amount before padding,
0000000000488715 i m checking amount after padding,


Not quite an integer
488715 i m checking amount before padding,
0000000000488714 i m checking amount after padding,

        [download]
        Bill
[reply]
[d/l]
[select]

In Section Seekers of Perl Wisdom