(libc.info.gz) Sign of Money Amount

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(libc.info.gz) Currency Symbol

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 7.6.1.3 Printing the Sign of a Monetary Amount
 ..............................................
 
 These members of the `struct lconv' structure specify how to print the
 sign (if any) of a monetary value.
 
 `char *positive_sign'
 `char *negative_sign'
      These are strings used to indicate positive (or zero) and negative
      monetary quantities, respectively.
 
      In the standard `C' locale, both of these members have a value of
      `""' (the empty string), meaning "unspecified".
 
      The ISO standard doesn't say what to do when you find this value;
      we recommend printing `positive_sign' as you find it, even if it is
      empty.  For a negative value, print `negative_sign' as you find it
      unless both it and `positive_sign' are empty, in which case print
      `-' instead.  (Failing to indicate the sign at all seems rather
      unreasonable.)
 
 `char p_sign_posn'
 `char n_sign_posn'
 `char int_p_sign_posn'
 `char int_n_sign_posn'
      These members are small integers that indicate how to position the
      sign for nonnegative and negative monetary quantities,
      respectively.  (The string used by the sign is what was specified
      with `positive_sign' or `negative_sign'.)  The possible values are
      as follows:
 
     `0'
           The currency symbol and quantity should be surrounded by
           parentheses.
 
     `1'
           Print the sign string before the quantity and currency symbol.
 
     `2'
           Print the sign string after the quantity and currency symbol.
 
     `3'
           Print the sign string right before the currency symbol.
 
     `4'
           Print the sign string right after the currency symbol.
 
     `CHAR_MAX'
           "Unspecified".  Both members have this value in the standard
           `C' locale.
 
      The ISO standard doesn't say what you should do when the value is
      `CHAR_MAX'.  We recommend you print the sign after the currency
      symbol.
 
      The members with the `int_' prefix apply to the `int_curr_symbol'
      while the other two apply to `currency_symbol'.
 

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(libc.info.gz) Currency Symbol

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