feat: allow changing max_digits for pretty_eval

src/formatting.rs

@@ -2,9 +2,7 @@ use rug::Float;
 
 use crate::nodes::{self, Error};
 
-pub const MAX_DIGITS: usize = 10;
-
-pub fn pretty_eval(mut input: String) -> Result<String, Error> {
+pub fn pretty_eval(mut input: String, max_digits: usize) -> Result<String, Error> {
     // no need to remove the characters here,
     // as we ignore the them in all other logic already
     let should_add_back_alignment = input.contains('&');
@@ -21,7 +19,7 @@ pub fn pretty_eval(mut input: String) -> Result<String, Error> {
     let result = nodes::eval(&input)?;
     let display_digits =
         get_significant_digits(&result)
-            .min(MAX_DIGITS)
+            .min(max_digits)
             .max(if result >= 1000 || result < 1 {
                 1
             } else if result >= 100 {

src/main.rs

@@ -17,7 +17,7 @@ fn main() -> ExitCode {
         }
     };
 
-    match formatting::pretty_eval(input) {
+    match formatting::pretty_eval(input, 10) {
         Ok(s) => println!("{s}"),
 
         Err(e) => {