The Units program converts quantities expressed in various scales
to their equivalents in other scales. The units program can handle
multiplicative scale changes as well as nonlinear conversions such as
Fahrenheit to Celsius or wire gauge. Units comes with an annotated,
extendable database defining over seven thousand units, including 134
nonlinear units, and 125 prefixes, using ten systems of units including
SI, 189 currencies, bitcoin and precious metals prices, plus US CPI
Consumer Price Index, all of which may be updated using units_cur.
For more information see the project home pages:
https://gnu.org/s/units/
https://sv.gnu.org/p/units/
The following package has been upgraded in the Cygwin distribution:
- units 2.24
A native Windows binary distribution should also soon be available:
https://ftpmirror.gnu.org/units/windows/units-2.24-setup.exe{,.sig}
If you would like to update currency exchange rates and commodity
prices, just run units_cur at the command line, in a profile or rc
startup script, or in a *daily* cron job.
Do *NOT* run units_cur more frequently than daily, as currency exchange
rates and commodity prices are updated only at most weekdays, and
excessive requests from units users could cause free access to accurate
online sources be stopped.
For changes since the previous Cygwin release see below or read
/usr/share/doc/units/NEWS after installation.
2024-11-21 2.24
- Units definitions updated to reflect 2022 NIST CODATA.
- Added ':=' assignment for interactively defined variables; this
reduces the right hand side and can prevent circular definitions.
- If you make a circular definition, the old definition is retained
- Interactive variable definitions now appear in the log file
- Added interactive "set" command to set or change options
- Added circlearea_d() for circle area from diameter as well as
sphere_vol_d(), circum_d()
- Added wiregaugeA() to convert wire gauge to metric sizes and added
various pipe sizes
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