locale_t
uselocale(locale_t loc);
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.
Returns the previous locale, or LC_GLOBAL_LOCALE if no per-thread locale
was in effect.
xlocale(3), duplocale(3), freelocale(3), newlocale(3), querylocale(3)
BSD March 11, 2005 BSD