michael@0: #!/usr/bin/perl
michael@0: 
michael@0: #
michael@0: # Treat each line as a sequence of comma and/or space delimited
michael@0: # floating point numbers, and compute basic statistics on them.
michael@0: # These are written to standard output
michael@0: 
michael@0: # This Source Code Form is subject to the terms of the Mozilla Public
michael@0: # License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0: # file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0: 
michael@0: $min = 1.7976931348623157E+308;
michael@0: $max = 2.2250738585072014E-308;
michael@0: $sum = $num = 0;
michael@0: 
michael@0: while(<>) {
michael@0:     chomp;
michael@0: 
michael@0:     @nums = split(/[\s,]+/, $_);
michael@0:     next if($#nums < 0);
michael@0: 
michael@0:     $num += scalar @nums;
michael@0:     foreach (@nums) {
michael@0: 	$min = $_ if($_ < $min);
michael@0: 	$max = $_ if($_ > $max);
michael@0: 	$sum += $_;
michael@0:     }
michael@0: }
michael@0: 
michael@0: if($num) {
michael@0:     $avg = $sum / $num;
michael@0: } else {
michael@0:     $min = $max = 0;
michael@0: }
michael@0: 
michael@0: printf "%d\tmin=%.2f, avg=%.2f, max=%.2f, sum=%.2f\n",
michael@0:     $num, $min, $avg, $max, $sum;
michael@0: 
michael@0: # end