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       strfmon, strfmon_l - convert monetary value to a string


       #include <monetary.h>

       ssize_t strfmon(char *s, size_t max, const char *format,

       ssize_t strfmon_l(char *s, size_t max, locale_t locale,
       const char *" format , ...);


       The  strfmon() function formats the specified monetary amount according
       to the current locale and format specification format  and  places  the
       result in the character array s of size max.

       The  strfmon_l()  function  performs the same task, but uses the locale
       specified by locale.  The  behavior  of  strfmon_l()  is  undefined  if
       locale is the special locale object LC_GLOBAL_LOCALE (see duplocale(3))
       or is not a valid locale object handle.

       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 positive, "-"
              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 representation  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  formatting.   The  default  is
       specified  in  the frac_digits and int_frac_digits items of the current
       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 format.


       The strfmon() function returns the number of characters placed  in  the
       array  s, not including 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.


       For   an   explanation   of   the  terms  used  in  this  section,  see

       │InterfaceAttributeValue          │
       │strfmon()   │ Thread safety │ MT-Safe locale │
       │strfmon_l() │ Thread safety │ MT-Safe        │


       POSIX.1-2001, POSIX.1-2008.


       The call

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


           [€ **1234,57] [EUR **1 234,57]

       in the nl_NL locale.  The de_DE, de_CH, en_AU, and en_GB locales yield

           [ **1234,57 €] [ **1.234,57 EUR]
           [ Fr. **1234.57] [ CHF **1'234.57]
           [ $**1234.57] [ AUD**1,234.57]
           [ £**1234.57] [ GBP**1,234.57]


       duplocale(3), setlocale(3), sprintf(3), locale(7)


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