pub fn isotope_from_mat(mat: u32) -> Option<(u32, u32)>Expand description
Reverse lookup: MAT number → (Z, A).
Returns None if the MAT number is not in the table.
§Examples
assert_eq!(endf_mat::isotope_from_mat(9228), Some((92, 235)));
assert_eq!(endf_mat::isotope_from_mat(9999), None);