in reply to Re: Rounding to a Given Number of Significant Figures Rather Than Decimal Places
in thread Rounding to a Given Number of Significant Figures Rather Than Decimal Places

Drop the zero in the format.

Update: Urm... that will replace the leading zero with a space, which is only part of your problem... Apparently, the default precision offered by "%g" is smaller than the precision you desire.

OK, try this: 

$_ = 1298.844667;
my $clem = sprintf("%.7g", $_); 
print "$clem\n";

[download]
Result: 
1298.845

[download]
 OK?

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