Delila Program: diffint

diffint program

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

{   version = 1.07; (* of diffint.p 2007 Nov 29}

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

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

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

   output: the difference between each integer and 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 is given to the output.

documentation

see also

   Program that allows selection of columns and ranges of differences
    to be selected: diffintcut.p

author

   Thomas Dana Schneider

bugs

technical notes

   The program originally acted as if the integer before the first one
   is zero, but this creates artifacts.  The initial data point is now
   dropped.  However, data often comes separate into chunks.  This is
   marked by the comments.  So the program resets everytime there is a
   comment line.

   The name was changed to diffint (from difint) because that's
   closer to the Unix diff command.

bugs
   none known

*)
(* end module describe.diffint *)
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