--- Developping mode; Further I'll tru out structures... ---

Compile layer2.c, run executable, and if needed press [Ctrl+C] to terminate! 

Performance:

  p = ( 100*80*35*200 ) / time
  
  1) on Intel Pentium-III at 700 MHz: 
       (real->float), g++ -O3: 
            time = 153.2, p = 36553 cells*steps/sec 
       (real->double), g++ -O3: 
            time = 171.4, 
	   
  2) ...