localeconv,
localeconv_l — natural
language formatting for C
Standard C Library (libc, -lc)
#include
<locale.h>
struct lconv *
localeconv(void);
#include
<xlocale.h>
struct lconv *
localeconv_l(locale_t loc);
The
localeconv()
function returns a pointer to a structure which provides parameters for
formatting numbers, especially currency values:
struct lconv {
char *decimal_point;
char *thousands_sep;
char *grouping;
char *int_curr_symbol;
char *currency_symbol;
char *mon_decimal_point;
char *mon_thousands_sep;
char *mon_grouping;
char *positive_sign;
char *negative_sign;
char int_frac_digits;
char frac_digits;
char p_cs_precedes;
char p_sep_by_space;
char n_cs_precedes;
char n_sep_by_space;
char p_sign_posn;
char n_sign_posn;
char int_p_cs_precedes;
char int_n_cs_precedes;
char int_p_sep_by_space;
char int_n_sep_by_space;
char int_p_sign_posn;
char int_n_sign_posn;
};
The individual fields have the following meanings:
- decimal_point
- The decimal point character, except for currency values, cannot be an
empty string.
- thousands_sep
- The separator between groups of digits before the decimal point, except
for currency values.
- grouping
- The sizes of the groups of digits, except for currency values. This is a
pointer to a vector of integers, each of size char,
representing group size from low order digit groups to high order (right
to left). The list may be terminated with 0 or
CHAR_MAX. If the list is terminated with 0, the
last group size before the 0 is repeated to account for all the digits. If
the list is terminated with CHAR_MAX, no more
grouping is performed.
- int_curr_symbol
- The standardized international currency symbol.
- currency_symbol
- The local currency symbol.
- mon_decimal_point
- The decimal point character for currency values.
- mon_thousands_sep
- The separator for digit groups in currency values.
- mon_grouping
- Like grouping but for currency values.
- positive_sign
- The character used to denote nonnegative currency values, usually the
empty string.
- negative_sign
- The character used to denote negative currency values, usually a minus
sign.
- int_frac_digits
- The number of digits after the decimal point in an international-style
currency value.
- frac_digits
- The number of digits after the decimal point in the local style for
currency values.
- p_cs_precedes
- 1 if the currency symbol precedes the currency value for nonnegative
values, 0 if it follows.
- p_sep_by_space
- 1 if a space is inserted between the currency symbol and the currency
value for nonnegative values, 0 otherwise.
- n_cs_precedes
- Like p_cs_precedes but for negative values.
- n_sep_by_space
- Like p_sep_by_space but for negative values.
- p_sign_posn
- The location of the positive_sign with respect to a
nonnegative quantity and the currency_symbol, coded
as follows:
0- Parentheses around the entire string.
1- Before the string.
2- After the string.
3- Just before currency_symbol.
4- Just after currency_symbol.
- n_sign_posn
- Like p_sign_posn but for negative currency
values.
- int_p_cs_precedes
- Same as p_cs_precedes, but for internationally
formatted monetary quantities.
- int_n_cs_precedes
- Same as n_cs_precedes, but for internationally
formatted monetary quantities.
- int_p_sep_by_space
- Same as p_sep_by_space, but for internationally
formatted monetary quantities.
- int_n_sep_by_space
- Same as n_sep_by_space, but for internationally
formatted monetary quantities.
- int_p_sign_posn
- Same as p_sign_posn, but for internationally
formatted monetary quantities.
- int_n_sign_posn
- Same as n_sign_posn, but for internationally
formatted monetary quantities.
Unless mentioned above, an empty string as a value for a field
indicates a zero length result or a value that is not in the current locale.
A CHAR_MAX result similarly denotes an unavailable
value.
While the
localeconv()
function uses the current locale, the
localeconv_l()
function may be passed a locale directly. See
xlocale(3) for more information.
The localeconv() function returns a
pointer to a static object which may be altered by later calls to
setlocale(3) or
localeconv().
The localeconv() function conforms to
ISO/IEC 9899:1999
(“ISO C99”).
The localeconv() function first appeared
in 4.4BSD.