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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | EXAMPLE | SEE ALSO | COLOPHON |
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STRFMON(3) Linux Programmer's Manual STRFMON(3)
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
attributes(7).
┌────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├────────────┼───────────────┼────────────────┤
│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);
outputs
[€ **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)
This page is part of release 4.15 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
https://www.kernel.org/doc/man-pages/.
Linux 2017-09-15 STRFMON(3)
Pages that refer to this page: localeconv(3), locale(7)
Copyright and license for this manual page
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