NAME

locale.h — category macros

SYNOPSIS

#include <locale.h>

DESCRIPTION

[CX] Some of the functionality described on this reference page extends the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 (“POSIX.1”) defers to the ISO C standard.

The <locale.h> header shall provide a definition for lconv structure, which shall include at least the following members. (See the definitions of LC_MONETARY in xbd_chap07(7) and xbd_chap07(7).)

char    *currency_symbol
char    *decimal_point
char     frac_digits
char    *grouping
char    *int_curr_symbol
char     int_frac_digits
char     int_n_cs_precedes
char     int_n_sep_by_space
char     int_n_sign_posn
char     int_p_cs_precedes
char     int_p_sep_by_space
char     int_p_sign_posn
char    *mon_decimal_point
char    *mon_grouping
char    *mon_thousands_sep
char    *negative_sign
char     n_cs_precedes
char     n_sep_by_space
char     n_sign_posn
char    *positive_sign
char     p_cs_precedes
char     p_sep_by_space
char     p_sign_posn
char    *thousands_sep

The <locale.h> header shall define NULL (as defined in <stddef.h>) and at least the following as macros:

LC_ALL LC_COLLATE LC_CTYPE [CX] LC_MESSAGES LC_MONETARY LC_NUMERIC LC_TIME

which shall expand to distinct integer constant expressions, for use as the first argument to the setlocale(3) function.

Additional macro definitions, beginning with the characters LC_ and an uppercase letter, may also be given here.

The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.

struct  lconv *localeconv(void);
char   *setlocale(int, const char *);

The following sections are informative.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

The System Interfaces volume of IEEE Std 1003.1-2001 (“POSIX.1”), localeconv(3), setlocale(3), xbd_chap08(7)

CHANGE HISTORY

First released in Issue 3.

Included for alignment with the ISO C standard.

Issue 6

The lconv structure is expanded with new members ( int_n_cs_precedes, int_n_sep_by_space, int_n_sign_posn, int_p_cs_precedes, int_p_sep_by_space, and int_p_sign_posn) for alignment with the ISO/IEC 9899:1999 (“ISO C99”) standard.

Extensions beyond the ISO C standard are marked.

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