ac is a basic architectural calculator.

To install, run go install github.com/aclements/ac@latest.

The ac command supports the usual arithmetic operations over numbers and dimensions of the form

<n>' <n>"

Any number can also include a fractional part separated by a space, such as "1 1/2". The fractional part must not include any spaces.

Examples:

9' - 20"
= 7' 4"

8' 1 1/2" / 2
= 4' 3/4"

ac uses arbitrary-precision rational numbers for all arithmetic.