Delila Program: doudiff

doudiff program

Documentation for the doudiff program is below, with links to related programs in the "see also" section.

{version = 1.00; (* of doudiff.p 2003 Aug 24}

(* begin module describe.doudiff *)
(*
name
   doudiff: double differences between integers

synopsis
   doudiff(input: in, output: out);

files
   input: a set of integers, one per line.
       Lines that begin with "*" are ignored.

   output:  Two integers are written per line:
       the difference between each integer and the previous one.
       the difference between each integer and the one before the previous one.

describe
   Lines that begin with an asterisk ('*') are first copied to the output.
   then the difference between each integer in input and the previous one
   along with the double distance difference is given to the output.

author
   Thomas Dana Schneider

technical notes
   The initial data points cannot be used.
   Data often comes separate into chunks.  This is marked by the comments.
   So the program resets everytime there is a comment line.

bugs
   none known

*)
(* end module describe.doudiff *)
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