Availability:built-in
setlocale(+Category,
-Old, +New)Set/Query the locale setting which tells the C library how to
interpret text files, write numbers, dates, etc. Category is one of
all, collate, ctype, messages,
monetary, numeric or time. For
details, please consult the C library locale documentation. See also section
2.19.1. Please note that the locale is shared between all threads
and thread-safe usage of setlocale/3
is in general not possible. Do locale operations before starting threads
or thoroughly study threading aspects of locale support in your
environment before using in multithreaded environments. Locale settings
are used by format_time/3, collation_key/2
and locale_sort/2.