#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
#
# Copyright © 2015 Michael Cook <mcook@mackal.net>
#
# Distributed under terms of the MIT license.

"""

"""
import sys

pmax = int(sys.argv[1])
pmin = int(sys.argv[2])

shielding = 35 # set this
dbdiv = (100 - shielding) / 100.0

di = (pmax - pmin) / 19.0
dbshielding = pmin - di
db = dbshielding / dbdiv

nmax = db + di * 20
nmin = db + di

print "DI = ({} - {}) / 19 = {}".format(pmax, pmin, di)
print "DB * {} = {} - {} = {}".format(dbdiv, pmin, di, dbshielding)
print "DB = {} / {} = {}".format(dbdiv, dbshielding, db)
print "max = {} + {} * 20 = {}".format(db, di, nmax)
print "min = {} + {} * 1 = {}".format(db, di, nmin)