search is never case-sensitive

[chhotii-alex]

Emacs search is non-case-sensitive if you enter the search string as all lowercase letters, but it is case-sensitive if you enter uppercase letters or a combination of upper and lowercase letters. In Code the search is always case-insensitive?... So if I want to search for "NaN", and not be shown all the instances of "nan", there doesn't seem to be a way to do this. Is there a way to enable case sensitivity in searching? Thanks!