localeconv(3C) localeconv(3C)
localeconv - get numeric formatting information
#include <locale.h>
struct lconv *localeconv (void);
localeconv 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 members of the structure with type char * are strings, any of which
(except decimal_point) can point to "", to indicate that the value is not
available in the current locale or is of zero length. The members with
type char are nonnegative numbers, any of which can be CHAR_MAX (defined
in the limits.h header file) 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 in which each element is taken as an integer that indicates
the number of digits that comprise the current group in a formatted
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localeconv(3C) localeconv(3C)
non-monetary quantity. The elements of 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 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 to
the left of the current group.
char *int_curr_symbol
The international currency symbol applicable to the current
locale, left-justified within a four-character space-padded field.
The character sequences should match with those specified in: ISO
4217:1987 Codes for the Representation of Currency and Funds.
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 in which each element is taken as an integer that
indicates the number of digits that comprise the current group in
a formatted monetary quantity. The elements of mon_grouping are
interpreted according to the rules described under grouping.
char *positive_sign
The string used to indicate a nonnegative-valued formatted
monetary 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.
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localeconv(3C) localeconv(3C)
char p_cs_precedes
Set to 1 or 0 if the currency_symbol respectively precedes or
succeeds the value for a nonnegative formatted monetary quantity.
char p_sep_by_space
Set to 1 or 0 if the currency_symbol respectively is or is not
separated by a space from the value for a nonnegative formatted
monetary quantity.
char n_cs_precedes
Set to 1 or 0 if the currency_symbol respectively precedes or
succeeds the value for a negative formatted monetary quantity.
char n_sep_by_space
Set to 1 or 0 if the currency_symbol respectively is or is not
separated by a space from the value for a negative formatted
monetary quantity.
char p_sign_posn
Set to a value indicating the positioning of the positive_sign for
a nonnegative formatted monetary quantity. The value of
p_sign_posn is interpreted according to the following:
0 Parentheses surround the quantity and currency_symbol.
1 The sign string precedes the quantity and currency_symbol.
2 The sign string succeeds the quantity and currency_symbol.
3 The sign string immediately precedes the currency_symbol.
4 The sign string immediately succeeds the currency_symbol.
char n_sign_posn
Set to a value indicating the positioning of the negative_sign for
a negative formatted monetary quantity. The value of n_sign_posn
is interpreted according to the rules described under p_sign_posn.
localeconv 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.
The following table illustrates the rules used by four countries to
format monetary quantities.
Country Positive format Negative formatInternational format
Italy L.1.234 -L.1.234 ITL.1.234
Netherlands F 1.234,56 F -1.234,56NLG 1.234,56
Norway kr1.234,56 kr1.234,56-NOK 1.234,56
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localeconv(3C) localeconv(3C)
Switzerland SFrs.1,234.56 SFrs.1,234.56CCHF 1,234.56
For these four countries, the respective values for the monetary members
of the structure returned by localeconv are as follows:
Italy Netherlands NorwaySwitzerland
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 22
frac_digits 0 2 2 2
p_cs_precedes 1 1 1 1
p_sep_by_space 0 1 00
n_cs_precedes 1 1 1 1
n_sep_by_space 0 1 00
p_sign_posn 1 1 1 1
n_sign_posn 1 4 2 2
/usr/lib/locale/locale<b>/LC_MONETARY LC_MONETARY database for locale
/usr/lib/locale/locale<b>/LC_NUMERIC LC_NUMERIC database for locale
montbl(1M), setlocale(3C).
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