setlocaleLCALL

setlocaleLCALL is not a standard function in the C or POSIX libraries. It is used in some codebases as a wrapper or alias around locale management routines, typically intended to simplify configuring the program’s locale in a single call. Because it is not part of the official C library, its exact form and behavior depend on the project that defines it.

In standard C, locale settings are controlled by setlocale and a set of locale categories such as LC_ALL, LC_CTYPE, LC_NUMERIC, LC_TIME, LC_MONETARY, and LC_MESSAGES. A wrapper named setlocaleLCALL commonly aims to unify these operations, either by providing a convenience that applies a locale to all categories or by routing calls to setlocale with a chosen category.

Common patterns include a function prototype that takes a locale string and applies it to all categories, for example setlocaleLCALL("en_US.UTF-8"), which internally may call setlocale(LC_ALL, "en_US.UTF-8"). Some implementations may offer a variant that accepts a category parameter and another that mirrors the standard setlocale signature but with a different name.

Usage considerations include thread-safety and scope. In standard C, locale changes via setlocale affect the entire process, which is not thread-safe. Some environments offer per-thread locale controls (for example through per-thread locale objects or uselocale), but these are separate mechanisms from setlocaleLCALL unless explicitly implemented.

See also: setlocale, locale, LC_ALL, uselocale, localeconv.