[ yet another pi calculation program in bf

  Just like for pi16.b the accuracy of the result depends on the cellsize:
	
   - using  8 bit cells causes an overflow after 4 digits
   - using 16 bit cells causes an overflow after 537 digits
   - using 32 bit cells causes an overflow after several millions of digits
	 
  It's about ~32 times shorter than pi16.b, ~345 times faster and works with
  not-wrapping (bignum) implementations. 
	
  by Felix Nawothnig (felix.nawothnig@t-online.de) ]

>+++++[<+++++++++>-]>>>>>>

+++++ +++++ +++++ (15 digits)

[<<+>++++++++++>-]<<+>>+++<[->>+<-[>>>]>[[<+>-]>+>>]<<<<<]>[-]>[-]>[<+>-]<[>+<[-
>>>>>>>+<<<<<<<]>[->+>>>>>>+<<<<<<<]>>>>++>>-]>[-]<<<[<<<<<<<]<[->>>>>[>>>>>>>]<
<<<<<<[>>>>[-]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<<[<<++++++++++>>-]>[<<<<[>+>>+<<<-
]>>>[<<<+>>>-]>-]<<<<[>>++>+<<<-]>>->[<<<+>>>-]>[-]<<<[->>+<-[>>>]>[[<+>-]>+>>]<
<<<<]>[-]<<<<<<<<<]>+>>>>>>->>>>[<<<<<<<<+>>>>>>>>-]<<<<<<<[-]++++++++++<[->>+<-
[>>>]>[[<+>-]>+>>]<<<<<]>[-]>[>>>>>+<<<<<-]>[<+>>+<-]>[<+>-]<<<+<+>>[-[-[-[-[-[-
[-[-[-<->[-<+<->>[<<+>>[-]]]]]]]]]]]]<[+++++[<<<<++++++++>>>>>++++++++<-]>+<<<<-
>>[>+>-<<<<<+++++++++>>>-]<<<<[>>>>>>+<<<<<<-]<[>>>>>>>.<<<<<<<<[+.[-]]>>]>[<]<+
>>>[<.>-]<[-]>>>>>[-]<[>>[<<<<<<<+>>>>>>>-]<<-]]>>[-]>+<<<<[-]<]++++++++++.
