logisheets_controller 1.16.1

Core spreadsheet engine for LogiSheets: formula evaluation, dependency tracking, and undo/redo.
Documentation 
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use crate::calc_engine::calculator::calc_vertex::CalcVertex;
use logisheets_parser::ast;

pub fn calc(args: Vec<CalcVertex>) -> CalcVertex {
    if args.len() > 0 {
        return CalcVertex::from_error(ast::Error::Unspecified);
    }
    CalcVertex::from_number(std::f64::consts::PI)
}