#!/bin/bash

e0=`grep ^0 $1/energy | awk '{ print $4 }'`
e1=`tail -n 1 $1/energy | awk '{ print $4 }'`
ev=`grep ^19.000 $1/energy | awk '{ print $4 }'`
en=`grep ^20.000 $1/energy | awk '{ print $4 }'`

echo "$e0 $e1 $2 $ev $en" | \
	awk '{ print $5*($3+1)-$4*$3-($2*($3+1)-$1*$3) " eV" }'