USELOCALE(3) Library Functions Manual USELOCALE(3) NAME uselocale - Set the per-thread locale SYNOPSIS #include locale_t uselocale(locale_t loc); DESCRIPTION Sets the per-thread locale to loc. Specify LC_GLOBAL_LOCALE to turn off any per-thread locale. Pass NULL to return the current value of the per- thread locale (or LC_GLOBAL_LOCALE) without changing the locale. RETURN VALUES Returns the previous locale, or LC_GLOBAL_LOCALE if no per-thread locale was in effect. SEE ALSO duplocale(3), freelocale(3), newlocale(3), querylocale(3), xlocale(3) macOS 26.6 March 11, 2005 macOS 26.6