localeconv(3C) Standard C Library Functions localeconv(3C)NAMElocaleconv - get numeric formatting information
SYNOPSIS
#include <locale.h>
struct lconv *localeconv(void);
DESCRIPTION
The localeconv() function sets the components of an object with type
struct lconv (defined in <locale.h>) with the values appropriate for
the formatting of numeric quantities (monetary and otherwise) according
to the rules of the current locale (see setlocale(3C)). The definition
of struct lconv is given below (the values for the fields in the "C"
locale are given in comments).
char *decimal_point; /* "." */
char *thousands_sep; /* "" (zero length string) */
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_MAX */
char frac_digits; /* CHAR_MAX */
char p_cs_precedes; /* CHAR_MAX */
char p_sep_by_space; /* CHAR_MAX */
char n_cs_precedes; /* CHAR_MAX */
char n_sep_by_space; /* CHAR_MAX */
char p_sign_posn; /* CHAR_MAX*/
char n_sign_posn; /* CHAR_MAX */
The following members are also available to SUSv3-conforming applica‐
tions. See standards(5)
char int_p_cs_precedes; /* CHAR_MAX */
char int_p_sep_by_space; /* CHAR_MAX */
char int_n_cs_precedes; /* CHAR_MAX */
char int_n_sep_by_space; /* CHAR_MAX */
char int_p_sign_posn; /* CHAR_MAX */
char int_n_sign_posn; /* CHAR_MAX */
The members of the structure with type char * are strings, any of which
(except decimal_point) can point to a null string (""), to indicate
that the value is not available in the current locale or is of zero
length. The members with type char are non-negative numbers, any of
which can be CHAR_MAX (defined in the <limits.h> header) to indicate
that the value is not available in the current locale. The members are
the following:
char *decimal_point
The decimal-point character used to format non-monetary quantities.
char *thousands_sep
The character used to separate groups of digits to the left of the
decimal-point character in formatted non-monetary quantities.
char *grouping
A string whose elements taken as one-byte integer values indicate
the size of each group of digits in formatted non-monetary quanti‐
ties.
char *int_curr_symbol
The international currency symbol applicable to the current locale.
The first three characters contain the alphabetic international
currency symbol in accordance with those specified in the ISO 4217:
1995 standard. The fourth character (immediately preceding the null
byte) is the character used to separate the international currency
symbol from the monetary quantity.
char *currency_symbol
The local currency symbol applicable to the current locale.
char *mon_decimal_point
The decimal point used to format monetary quantities.
char *mon_thousands_sep
The separator for groups of digits to the left of the decimal point
in formatted monetary quantities.
char *mon_grouping
A string whose elements taken as one-byte integer values indicate
the size of each group of digits in formatted monetary quantities.
char *positive_sign
The string used to indicate a non-negative-valued formatted mone‐
tary quantity.
char *negative_sign
The string used to indicate a negative-valued formatted monetary
quantity.
char int_frac_digits
The number of fractional digits (those to the right of the decimal
point) to be displayed in an internationally formatted monetary
quantity.
char frac_digits
The number of fractional digits (those to the right of the decimal
point) to be displayed in a formatted monetary quantity.
char p_cs_precedes
Set to 1 or 0 if the currency_symbol respectively precedes or suc‐
ceeds the value for a non-negative formatted monetary quantity.
char p_sep_by_space
Set to 0 if no space separates the currency_symbol or int_curr_sym‐
bol from the value for a non-negative formatted monetary quantity.
Set to 1 if a space separates the symbol from the value; and set to
2 if a space separates the symbol and the sign string, if adjacent.
char n_cs_precedes
Set to 1 or 0 if the currency_symbol respectively precedes or suc‐
ceeds the value for a negative formatted monetary quantity.
char n_sep_by_space
Set to 0 if no space separates the currency_symbol or int_curr_sym‐
bol from the value for a negative formatted monetary quantity. Set
to 1 if a space separates the symbol from the value; and set to 2
if a space separates the symbol and the sign string, if adjacent.
char p_sign_posn
Set to a value indicating the positioning of the positive_sign for
a non-negative formatted monetary quantity.
char n_sign_posn
Set to a value indicating the positioning of the negative_sign for
a negative formatted monetary quantity.
char int_p_cs_precedes
Set to 1 or 0 if the int_curr_symbol respectively precedes or suc‐
ceeds the value for a non-negative internationally formatted mone‐
tary quantity.
char int_n_cs_precedes
Set to 1 or 0 if the int_curr_symbol respectively precedes or suc‐
ceeds the value for a negative internationally formatted monetary
quantity.
char int_p_sep_by_space
Set to a value indicating the separation of the int_curr_symbol,
the sign string, and the value for a non-negative internationally
formatted monetary quantity.
char int_n_sep_by_space
Set to a value indicating the separation of the int_curr_symbol,
the sign string, and the value for a negative internationally for‐
matted monetary quantity.
char int_p_sign_posn
Set to a value indicating the positioning of the positive_sign for
a non-negative internationally formatted monetary quantity.
char int_n_sign_posn
Set to a value indicating the positioning of the negative_sign for
a negative internationally formatted monetary quantity.
The elements of grouping and mon_grouping are interpreted according to
the following:
{CHAR_MAX} No further grouping is to be performed.
0 The previous element is to be repeatedly used for the
remainder of the digits.
other The integer value is the number of digits that comprise
the current group. The next element is examined to
determine the size of the next group of digits before
the current group.
The values of p_sep_by_space, n_sep_by_space, int_p_sep_by_space, and
int_n_sep_by_space are interpreted according to the following:
0 No space separates the currency symbol and value.
1 If the currency symbol and sign string are adjacent, a space
separates them from the value; otherwise, a space separates
the currency symbol from the value.
2 If the currency symbol and sign string are adjacent, a space
separates them; otherwise, a space separates the sign string
from the value.
In an SUSv3-conforming application, for int_p_sep_by_space and
int_n_sep_by_space, the fourth character of int_curr_symbol is used
instead of a space.
The values of p_sign_posn, n_sign_posn, int_p_sign_posn, and
int_n_sign_posn are interpreted according to the following:
0 Parentheses surround the quantity and currency_symbol or
int_curr_symbol.
1 The sign string precedes the quantity and currency_symbol or
int_curr_symbol.
2 The sign string succeeds the quantity and currency_symbol or
int_curr_symbol.
3 The sign string immediately precedes the currency_symbol or
int_curr_symbol.
4 The sign string immediately succeeds the currency_symbol or
int_curr_symbol.
RETURN VALUES
The localeconv() function returns a pointer to the filled-in object.
The structure pointed to by the return value may be overwritten by a
subsequent call to localeconv().
EXAMPLES
Example 1: Rules used by four countries to format monetary quantities.
The following table illustrates the rules used by four countries to
format monetary quantities.
Country Positive Negative International
Italy (IT) L.1.234 −L.1.234 ITL.1.234
Netherlands (NE) F 1.234,56 F −1.234,56 NLG 1.234,56
Norway (NO) kr1.234,56 kr1.234,56− NOK 1.234,56
Switzerland (SW) SFrs.1,234.56 SFrs.1,234.56C CHF 1,234.56
For these four countries, the respective values for the monetary mem‐
bers of the structure returned by localeconv() are as follows:
IT NE NO SW
int_curr_symbol "ITL." "NLG " "NOK " "CHF "
currency_symbol "L." "F" "kr" "SFrs."
mon_decimal_point "" "," "," "."
mon_thousands_sep "." "." "." ","
mon_grouping "\3" "\3" "\3" "\3"
positive_sign "" "" "" ""
negative_sign "-" "-" "-" "C"
int_frac_digits 0 2 2 2
frac_digits 0 2 2 2
p_cs_precedes 1 1 1 1
p_sep_by_space 0 1 0 0
n_cs_precedes 1 1 1 1
n_sep_by_space 0 1 0 0
p_sign_posn 1 1 1 1
n_sign_posn 1 4 2 2
int_p_cs_precedes 1 1 1 1
int_n_cs_precedes 1 1 1 1
int_p_sep_by_space 0 0 0 0
int_n_sep_by_space 0 0 0 0
int_p_sign_posn 1 1 1 1
int_n_sign_posn 1 4 4 2
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│CSI │Enabled │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe with exceptions │
└─────────────────────────────┴─────────────────────────────┘
The localeconv() function can be used safely in multithreaded applica‐
tions, as long as setlocale(3C) is not being called to change the
locale.
SEE ALSOsetlocale(3C), attributes(5), environ(5), standards(5)SunOS 5.10 12 Dec 2003 localeconv(3C)
