GNU units NEWS - User visible changes.
Copyright (C) 1996, 1997, 1999, 2000, 2001 Free Software Foundation, Inc.

Version 1.7x

This version is a beta testing release.

* Rewritten parser supports () for grouping, supports noninteger
  powers of numbers (e.g. 3^0.25), supports a bunch of functions (log,
  ln, log2, sin, cos, tan, exp) which can have units as arguments but
  they must reduce to dimensionless (e.g. log(watts/horsepower)),
  supports sqrt(unit) and cuberoot(unit), higher roots as unit^(1|4).

* functions can be defined in units.dat along with their inverse, and
  conversion to a function by specifying it's name alone as the "want"
  item. 

* tables with linear interpolation

* help command summarizes operations, help unit browses the units
  database at the definition of the specified unit.  Specify "?" for
  the want unit and get a list of all conformable units.  

* units file extended and corrected

Version 1.55 - July 30, 1999

* Added over 600 new units and corrected errors in the units data file.
* Minor bug fix affecting unit name completion.


Version 1.54 - July 15, 1997

* Switched order of prefix and plural handling (plurals are now done first)
* Added reciprocal unit conversion and --strict (-s) option
* Fixed some erroneous unit definitions, added currency codes and other units
* Improved Makefile (exec-prefix, program-transform-name supported)
* Bug fixes


Version 1.53 - Jan 13, 1997

* Added units containing ISO 8859-1 characters
* Bug fixes 


Version 1.52 - Dec 18, 1996

* Sums of conformable units 
* Printing of unit definitions 
* Unitname completion with readline
* Added --verbose (-v) option and moved --version to -V
* Improved portability, old style C support, improved Makefile