std::localeconv

From cppreference.com
< cpp‎ | locale
Defined in header <clocale>
std::lconv* localeconv();

The localeconv function obtains a pointer to a static object of type std::lconv, which represents numeric and monetary formatting rules of the current C locale.

Parameters

(none)

Return value

Pointer to the current std::lconv object.

Notes

Modifying the object references through the returned pointer is undefined behavior.

std::localeconv modifies a static object, calling it from different threads without synchronization is undefined behavior.