This is a function to trim a decimal number in Perl, this function did not round the number just make an sub string from the dot to the end:
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use strict; print trim_deciamal("2.1",3).$/; print trim_deciamal("2.12",3).$/; print trim_deciamal("2.123",3).$/; print trim_deciamal("2.1234",3).$/; print trim_deciamal("2.12345",3).$/; sub trim_deciamal{ my ($f,$h) = split(/\./o,$_[0]); if(length($h) >= $_[1]){ $h = substr($h,0,$_[1]); }else{ $h = sprintf("%-".$_[1]."s",$h); $h =~ tr/ /0/; } return($f.".".$h); } |
Result looks like this:
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2.100 2.120 2.123 2.123 2.123 |
we see missing positions are filled with 0 and longer numbers are trimmed.
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