Crate cpc

calculation + conversion

cpc parses and evaluates strings of math, with support for units and conversion. 128-bit decimal floating points are used for high accuracy.

cpc lets you mix units, so for example 1 km - 1m results in Number { value: 999, unit: Meter }.

Check out the list of supported units

Example usage

use cpc::{eval};
use cpc::units::Unit;
 
match eval("3m + 1cm", true, Unit::Celsius, false) {
    Ok(answer) => {
        // answer: Number { value: 301, unit: Unit::Centimeter }
        println!("Evaluated value: {} {:?}", answer.value, answer.unit)
    },
    Err(e) => {
        println!("{}", e)
    }
}

Modules

evaluator	Turns an AstNode into a Number
lexer	Turns a string into Tokens
parser	Turns Tokens into an AstNode
units	Units, and functions you can use with them

Structs

Number

A number with a Unit.

Enums

Constant	A constant like Pi or E.
FunctionIdentifier	Functions identifiers like Sqrt, Sin, Round, etc.
LexerKeyword	A temporary enum used by the lexer to later determine what Token it is.
NamedNumber	A named number like Million.
Operator	Math operators like Multiply, parentheses, etc.
TextOperator	A Text operator like To or Of.
Token	A token like a Number, Operator, Unit etc.
UnaryOperator	Unary operators like Percent and Factorial.

Functions

eval	Evaluates a string into a resulting Number.