X-Git-Url: http://git.shiar.nl/barcat.git/blobdiff_plain/571ed1a9a73129dff78c4d04333949605b91c273..a3dd7b92d69d2a964f51b58917611fe25e9b18b7:/barcat

diff --git a/barcat b/barcat
index ce3f788..fedb6c9 100755
--- a/barcat
+++ b/barcat
@@ -112,7 +112,12 @@ $opt{input} = (@ARGV && $ARGV[0] =~ m/\A[-0-9]/) ? \@ARGV : undef
 $opt{'sum-format'} = sub { sprintf '%.8g', $_[0] };
 $opt{'calc-format'} = sub { sprintf '%*.*f', 0, 2, $_[0] };
 $opt{'value-format'} = $opt{units} && sub {
-	my $unit = int(log(abs $_[0] || 1) / log(10) - 3*($_[0] < 1) + 1e-15);
+	my $unit = int(
+		log(abs $_[0] || 1) / log(10)
+		- 3 * ($_[0] < .9995)   # shift to smaller unit if below 1
+		- log(.9995) / log(10)  # 3 digits rounding up
+		+ 1e-15  # float imprecision
+	);
 	my $float = $_[0] !~ /^0*[-0-9]{1,3}$/;
 	sprintf('%3.*f%1s',
 		$float && ($unit % 3) == ($unit < 0),  # tenths