strfmon man page on Archlinux

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

       strfmon - convert monetary value to a string

       #include <monetary.h>

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

       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.  Con‐
       version specifiers are introduced by a '%' character.  Immediately fol‐
       lowing it there can be zero or more of the following flags:

       =f     The  single-byte character f is used as the numeric fill charac‐
	      ter (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 deci‐
       mal 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 dec‐
       imal digit string.  The amount being formatted is rounded to the speci‐
       fied 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.

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

       The call

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


	   [ 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  spaces.  This may be a bug in the locale files.  The Italian, Aus‐
       tralian, Swiss, and Portuguese 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 ]

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

       This page is part of release 3.65 of the Linux  man-pages  project.   A
       description  of	the project, and information about reporting bugs, can
       be found at

Linux				  2000-12-05			    STRFMON(3)

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