UNITS(1) UNITS(1) NAME units - conversion program SYNOPSIS units [ -v ] [ file ] DESCRIPTION Units converts quantities expressed in various standard scales to their equivalents in other scales. It works interactively in this fashion: you have: inch you want: cm * 2.54 / 0.393701 A quantity is specified as a multiplicative combination of units and floating point numbers. Operators have the fol- lowing precedence: + - add and subtract * / × ÷ multiply and divide catenation multiply ² ³ ^ exponentiation | divide ( ... ) grouping Most familiar units, abbreviations, and metric prefixes are recognized, together with a generous leavening of exotica and a few constants of nature including: pi,π ratio of circumference to diameter c speed of light e charge on an electron g acceleration of gravity force same as g mole Avogadro's number water pressure head per unit height of water au astronomical unit The `pound' is a unit of mass. Compound names are run together, e.g. `lightyear'. British units that differ from their US counterparts are prefixed thus: `brgallon'. Cur- rency is denoted `belgiumfranc', `britainpound', etc. The complete list of units can be found in /lib/units. A file argument to units specifies a file to be used instead of /lib/units. The -v flag causes units to print its entire database. UNITS(1) UNITS(1) EXAMPLE you have: 15 pounds force/in² you want: atm * 1.02069 / .97973 FILES /lib/units SOURCE /sys/src/cmd/units.y BUGS Since units does only multiplicative scale changes, it can convert Kelvin to Rankine but not Centigrade to Fahrenheit. Currency conversions are only as accurate as the last time someone updated /lib/units.