part of original file [ fmt.c ]

/* GNU fmt -- simple text formatter.
   Copyright (C) 1994-2006, 2008-2009 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see .  */

/* Written by Ross Paterson .  */


/* FIXME: "fmt" misbehaves given large inputs or options.  One
   possible workaround for part of the problem is to change COST to be
   a floating-point type.  There are other problems besides COST,
   though; see MAXWORDS below.  */

typedef long int COST;

#define MAXCOST	TYPE_MAXIMUM (COST)

#define SQR(n)		((n) * (n))
#define EQUIV(n)	SQR ((COST) (n))

/* Cost of a filled line n chars longer or shorter than best_width.  */
#define SHORT_COST(n)	EQUIV ((n) * 10)

/* Cost of the difference between adjacent filled lines.  */
#define RAGGED_COST(n)	(SHORT_COST (n) / 2)

http://en.wikipedia.org/wiki/Indentation
http://en.wikipedia.org/wiki/Fmt