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#!/usr/bin/perl

#
# Treat each line as a sequence of comma and/or space delimited
# floating point numbers, and compute basic statistics on them.
# These are written to standard output

# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
#
# The Initial Developer of the Original Code is
# Michael J. Fromberger <sting@linguist.dartmouth.edu>.
# Portions created by the Initial Developer are Copyright (C) 1998, 2000
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****

# $Id: stats,v 1.2 2005/02/02 22:28:22 gerv%gerv.net Exp $
#

$min = 1.7976931348623157E+308;
$max = 2.2250738585072014E-308;
$sum = $num = 0;

while(<>) {
    chomp;

    @nums = split(/[\s,]+/, $_);
    next if($#nums < 0);

    $num += scalar @nums;
    foreach (@nums) {
	$min = $_ if($_ < $min);
	$max = $_ if($_ > $max);
	$sum += $_;
    }
}

if($num) {
    $avg = $sum / $num;
} else {
    $min = $max = 0;
}

printf "%d\tmin=%.2f, avg=%.2f, max=%.2f, sum=%.2f\n",
    $num, $min, $avg, $max, $sum;

# end