Constant endf_format::integer::ENDF_INT_REGEX

pub const ENDF_INT_REGEX: &str = r"^[ ]*[-+]?(?:0|[1-9]\d{0,9}?)$";

ENDF-6 format integer regular expression.

Regular expression provided for checking parse input beforehand.

use regex::Regex;

let regex = Regex::new(endf_format::integer::ENDF_INT_REGEX).unwrap();
let integer = "-1234567890";
assert!(regex.is_match(integer));
let x = endf_format::integer::parse(integer).unwrap();