Calculator

Currently, the mathematical operations "+", "-", "*", and "/" are supported with arbitrary nesting of parenthesised expressions. All calculations are performed in double precision. In addition to the standard operations above, the following functions are currently supported:

• sqrt : square root
• a^n : exponentiation (n can be arbitrary double)
• exp : exponential function
• ln, log2, log10 : natural, base2, and base10 logarithm
• cos, sin, tan, acos, asin, atan: trigonometric functions and inverse
• cosh, sinh, tanh, acosh, asinh, atanh: hyperbolic trigonometric functions and inverse

Furthermore, users can define any number of variables via

variable name = value

where variable name can be any combination of alphanumeric characters but has to begin with a letter. Hence, foobar1 is fine, but 1foobar is not. Defined variables can be used in expressions and definition of other variables.

Since husky uses the GNU readline library all readline related functionality is available at husky's interactive prompt (including command history). See [1] for more detail.

Unit Converter

The unit conversion functionality of husky can be used via the command

\c[onvert] <unit value> <from unit> <to unit> [ :: <unit type>]

Here, we convert <unit value> in units of <from unit> to the target unit <to unit>. In addition, the user may further specify the unit type (e.g. Length, Time, ...) to disambiguate a unit conversion request. The space between <unit value> and <from unit> is optional. E.g.:

\c 1m yd
\c 1 m yd
\c 1 m yd :: Length

will all convert 1 meter into yards. Please type:

\h[elp] units

for a list of all unit conversions.