A python-like calculator for simple math on the terminal. It only supports a handful of basic operators; if you need more, just use actual python. If you only need to do simple arithmetic, though, this should be fine.
Currently:
- All integers are 128-bit signed
- All floating-point values are 64-bit IEEE754.
- Integers are coerced to floats, but not the other way around.
- Values can be explicitly cast to a type: int(2.0) or float(2). For
integers, this truncates the value.
- Precedence aims to be C-like, though, I haven't tested thoroughly.
- Expressions can be grouped with ( <expr> ), as one would expect.
- Integers support the following basic operations:
- +, -, *, /: basic arithmetic. Note that we use integer division
for integer-typed operands.
- <<, >>: left and right shift
- b ** e: b raised to the power e. If e is a float, b is cast to
a float also. If e is an integer, e is cast to a 32-bit unsigned
integer.
- Floats support the following basic operations:
- +, -, *, /: basic arithmetic. Note that we use floating-point
division for float-typed operands.
- b ** e: b raised to the power e. e may be a float or an integer,
but if it is an integer, it will be truncated to 32-bits.
- The special _ value represents the previous (typed) result, which is stored
in /tmp/calculatrs. It can be used any place a value is expected. If an
error occurs, no change is made to the saved value.
You will need stable Rust.
sh
cargo build
You can install from cargo:
cargo install calculatrs
The installed binary is called c.
Suppose you install the binary on your path
```console
c 10 / 5 2 c '10 / 5' 2 ```
Beware of your shell expanding * into "list all files".