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From: Greg Lewis <glewis@FreeBSD.org>
Date: Wed, 18 Feb 2004 14:02:39 -0800 (PST)
To: ports-committers@FreeBSD.org, cvs-ports@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: ports/math Makefile ports/math/ndiff Makefile distinfo
 pkg-descr pkg-plist ports/math/ndiff/files patch-Makefile.in
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glewis      2004/02/18 14:02:39 PST

  FreeBSD ports repository

  Modified files:
    math                 Makefile 
  Added files:
    math/ndiff           Makefile distinfo pkg-descr pkg-plist 
    math/ndiff/files     patch-Makefile.in 
  Log:
  Add a port of ndiff:
  
  ndiff is a utility for comparing putatively similar files, ignoring small
  numeric differences.  The utility is written by Nelson H.  F. Beebe and
  covered by the GNU General Public License (GPL), version 2.  It may be
  built with arbitrary precision support (more powerful) or using built-in
  floating point precision, see Makefile.
  
  Assessing the consistency of a numerical program run in multiple
  environments (operating systems, architectures, or compilers) can be a
  difficult task for a human, as small differences in numerical output values
  are expected.  File differencing utilites, such as diff(1), will generally
  produce voluminous output, often longer than the original files.
  
  ndiff solves this problem. Taking two two text files expected to be
  identical, or at least numerically similar, it allows to specify absolute
  and/or relative error tolerances for differences between numerical values
  in the two files, and then reports only the lines with values exceeding
  those tolerances.  It also tells by how much they differ. A simple example:
  
  % ndiff --relative-error 1.0e-3 test019.txt.1 test019.txt.2
  ### Maximum relative error in matching lines = 8.64e-51 at line 129 field 4
  
  WWW: http://www.math.utah.edu/~beebe/software/ndiff/
  
  I've cleaned up the submitted version a little.
  
  PR:             62221
  Submitted by:   Stefan A. Deutscher <sad@mailaps.org>
  
  Revision  Changes    Path
  1.253     +1 -0      ports/math/Makefile
  1.1       +44 -0     ports/math/ndiff/Makefile (new)
  1.1       +2 -0      ports/math/ndiff/distinfo (new)
  1.1       +36 -0     ports/math/ndiff/files/patch-Makefile.in (new)
  1.1       +24 -0     ports/math/ndiff/pkg-descr (new)
  1.1       +4 -0      ports/math/ndiff/pkg-plist (new)