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STRFMON(3)                          Linux Programmer's Manual                          STRFMON(3)



NAME
       strfmon - convert monetary value to a string

SYNOPSIS
       #include <monetary.h>

       ssize_t strfmon(char *s, size_t max, const char *format, ...);

DESCRIPTION
       The strfmon() function formats the specified amounts according to the format specification
       format and places the result in the character array s of size max.

       Ordinary characters in format are copied to s without conversion.   Conversion  specifiers
       are  introduced by a '%' character.  Immediately following it there can be zero or more of
       the following flags:

       =f     The single-byte character f is used as the numeric fill character (to be used  with
              a left precision, see below).  When not specified, the space character is used.

       ^      Do  not  use  any grouping characters that might be defined for the current locale.
              By default, grouping is enabled.

       ( or + The ( flag indicates that negative amounts should be enclosed between  parentheses.
              The  +  flag  indicates  that  signs should be handled in the default way, that is,
              amounts are preceded by the locale's sign indication, for example, nothing for pos‐
              itive, "-" for negative.

       !      Omit the currency symbol.

       -      Left justify all fields.  The default is right justification.

       Next,  there may be a field width: a decimal digit string specifying a minimum field width
       in bytes.  The default is 0.  A result smaller than this width is padded with  spaces  (on
       the left, unless the left-justify flag was given).

       Next,  there  may  be a left precision of the form "#" followed by a decimal digit string.
       If the number of digits left of the radix character is smaller than this, the  representa‐
       tion  is  padded on the left with the numeric fill character.  Grouping characters are not
       counted in this field width.

       Next, there may be a right precision of the form "." followed by a decimal  digit  string.
       The  amount  being formatted is rounded to the specified number of digits prior to format‐
       ting.  The default is specified in the frac_digits and int_frac_digits items of  the  cur‐
       rent  locale.   If  the  right  precision is 0, no radix character is printed.  (The radix
       character here is determined by  LC_MONETARY,  and  may  differ  from  that  specified  by
       LC_NUMERIC.)

       Finally,  the  conversion  specification  must  be ended with a conversion character.  The
       three conversion characters are

       %      (In this case, the entire specification must be exactly "%%".)  Put a '%' character
              in the result string.

       i      One  argument of type double is converted using the locale's international currency
              format.

       n      One argument of type double is converted using the locale's national currency  for‐
              mat.

RETURN VALUE
       The strfmon() function returns the number of characters placed in the array s, not includ‐
       ing the terminating null byte, provided the string, including the terminating  null  byte,
       fits.   Otherwise,  it  sets  errno to E2BIG, returns -1, and the contents of the array is
       undefined.

CONFORMING TO
       Not in POSIX.1-2001.  Present on several other systems.

EXAMPLE
       The call

           strfmon(buf, sizeof(buf), "[%^=*#6n] [%=*#6i]",
                   1234.567, 1234.567);

       outputs

           [ fl **1234,57] [ NLG  **1 234,57]

       in the Dutch locale (with fl for "florijnen"  and  NLG  for  Netherlands  Guilders).   The
       grouping character is very ugly because it takes as much space as a digit, while it should
       not take more than half that, and will no doubt cause confusion.  Surprisingly,  the  "fl"
       is preceded and followed by a space, and "NLG" is preceded by one and followed by two spa‐
       ces.  This may be a bug in the locale files.  The Italian,  Australian,  Swiss,  and  Por‐
       tuguese locales yield

           [ L. **1235] [ ITL  **1.235]
           [ $**1234.57] [ AUD **1,234.57]
           [Fr. **1234,57] [CHF  **1.234,57]
           [ **1234$57Esc] [ **1.234$57PTE ]

SEE ALSO
       setlocale(3), sprintf(3), locale(7)

COLOPHON
       This  page  is  part of release 3.74 of the Linux man-pages project.  A description of the
       project, information about reporting bugs, and the latest version of  this  page,  can  be
       found at http://www.kernel.org/doc/man-pages/.



Linux                                       2000-12-05                                 STRFMON(3)


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