Datasheet

The C and C++ Libraries

category

is LC_ALL and the most recent successful locale-setting call uses a category

other than LC_ALL, a composite string might be returned. The string returned is such

that a subsequent call with that string and its associated category restores that part the

program locale. The string returned is not modified by the program, but might be

overwritten by a subsequent call to

setlocale()

4.6.12 _findlocale()

_findlocale()

searches the locale database and returns a pointer to the data block for the

requested category and locale.

Syntax

void const* _findlocale(void const* index, char const *name)

Returns

Returns a pointer to the requested data block.

4.6.13 __LC_CTYPE_DEF

This macro is used to create CTYPE blocks. The definitionfrom

rt_locale.h

and

sample code are shown in Example 4-9.

Example 4-9 LC_CTYPE_DEF

#define __LC_CTYPE_DEF(sym,ln) \

static const int sym##_index = ~3 & (3 + (268+(~3 & (3 + sizeof(ln))))); \

static const char sym##_lname[~3 & (3 + sizeof(ln))] = ln; \

static const int sym##_pname = -4-(~3 & (3 + sizeof(ln))); \

static const char sym##_start = 0; \

static const char sym##_table[256] =

For all the macros, the first two arguments are a symbol prefix and a locale name. The

resulting locale block is addressed by the expression

&symprefix_start

, and the index

entry by the expression

&symprefix_index

Usage

See _get_lc_ctype() on page 4-30.