- Uses a rational datatype when possible, and a high-precision float when not.
- Pretty printing in prompt (with special substitutions)
- Supports many physical units, with metric and binary prefixes
- Supports exponential notation
- Clear syntax, parsed input is always re-printed as a sanity check.
- Useful, detailed error messages
# Usage
All documentation is built into the prompt. Use the `help` command to view it.
## Evaluate expressions:
- Basic math: ``103 / 2 * 43``
- Functions: ``sqrt(1.4^3 + 4) * sin(pi / 4)``
- Scientific notation: ``1.2e12 * 1e-5``
## Physical units
- Unit operations: ``2 day + 1 hour``
- Unit conversion: ``2 day + 1 hour to minutes``
- Compound units: ``10 m/s to mph``
- Conversion errors: ``1 liter to volt``
## Varables
- Previous answer: `ans + 2`
- Variable assignment: `a = 143`
# Notes and Tricks
## Unit Conversion
The conversion operator `to` converts its left argument to the *unit* of its right argument, ignoring its value. For example, `5m to mi` and `5m to 10mi` are identical.
## Multiplication Order
Implicit multiplication has a higher priority than division. `1/2 pi` will parse as `1/(2pi)`. Type `(1/2) pi` or `1/2 * pi` to get half of pi.
## Inline Assignment
The assignment operator `=` returns its value, and can thus be used inside of an expression. For example, `(a = 2) + 2` assigns `a` to `2` and returns `4`. This only works for variable assignment.
