#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2008 Doug Hellmann All rights reserved.
     #
     """
     """
     
     __version__ = "$Id$"
     #end_pymotw_header
     
     import timeit
     
     iterations = 1000
     
     def show_results(title, result, iterations):
         "Print results in terms of microseconds per pass and per item."
         per_pass = 1000000 * (result / iterations)
         print '%s:\t%.2f usec/pass' % (title, per_pass)
     
     
     adler32 = timeit.Timer(
         stmt="zlib.adler32(data)",
         setup="import zlib; data=open('lorem.txt','r').read() * 10", 
         )
     show_results('Adler32, separate', adler32.timeit(iterations), iterations)
     
     adler32_running = timeit.Timer(
         stmt="cksum = zlib.adler32(data, cksum)",
         setup="import zlib; data=open('lorem.txt','r').read() * 10; cksum = zlib.adler32(data)", 
         )
     show_results('Adler32, running', adler32_running.timeit(iterations), iterations)
     
     crc32 = timeit.Timer(
         stmt="zlib.crc32(data)",
         setup="import zlib; data=open('lorem.txt','r').read() * 10", 
         )
     show_results('CRC-32, separate', crc32.timeit(iterations), iterations)
     
     crc32_running = timeit.Timer(
         stmt="cksum = zlib.crc32(data, cksum)",
         setup="import zlib; data=open('lorem.txt','r').read() * 10; cksum = zlib.crc32(data)", 
         )
     show_results('CRC-32, running', crc32_running.timeit(iterations), iterations)