4.14 lconv structure

Defined in locale.h, the lconv structure contains numeric formatting information

The structure is filled by the functions _get_lconv() and localeconv().

The definition of lconv from locale.h is as follows.

struct lconv {
  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 indicate the size of each group of digits  */
       /* in formatted non monetary quantities. See below for more details.  */
  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 ISO 4217.    */
       /* Codes for the representation of Currency and Funds. The fourth     */
       /* character (immediately preceding the null character) 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 indicate the size of each group of digits  */
       /* in formatted monetary quantities. See below for more details.      */
  char *positive_sign;
       /* The string used to indicate a non negative-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 quantities.                                               */
  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      */
       /* succeeds the value for a non negative 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 non negative 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 position of the positive_sign for a  */
       /* non negative formatted monetary quantity. See below for more details*/
  char n_sign_posn;
       /* Set to a value indicating the position of the negative_sign for a  */
       /* negative formatted monetary quantity. */
};

The elements of grouping and mon_grouping are interpreted as follows:

CHAR_MAX

No additional grouping is to be performed.

0

The previous element is repeated 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.

The value of p_sign_posn and n_sign_posn are interpreted as follows:

0

Parentheses surround the quantity and currency symbol.

1

The sign string precedes the quantity and currency symbol.

2

The sign string is after the quantity and currency symbol.

3

The sign string immediately precedes the currency symbol.

4

The sign string immediately succeeds the currency symbol.

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