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NAME |LIBRARY |SYNOPSIS |DESCRIPTION |RETURN VALUE |ATTRIBUTES |STANDARDS |HISTORY |EXAMPLES |SEE ALSO |COLOPHON | |
strfmon(3) Library Functions Manualstrfmon(3)strfmon, strfmon_l - convert monetary value to a string
Standard C library (libc,-lc)
#include <monetary.h>ssize_t strfmon(size_t max;chars[restrictmax], size_tmax,const char *restrictformat, ...);ssize_t strfmon_l(size_t max;chars[restrictmax], size_tmax, locale_tlocale,const char *restrictformat, ...);
Thestrfmon() function formats the specified monetary amount according to the current locale and format specificationformat and places the result in the character arrays of sizemax. Thestrfmon_l() function performs the same task, but uses the locale specified bylocale. The behavior ofstrfmon_l() is undefined iflocale is the special locale objectLC_GLOBAL_LOCALE (seeduplocale(3)) or is not a valid locale object handle. Ordinary characters informat are copied tos 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 characterf 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 thefrac_digits andint_frac_digits items of the current locale. If the right precision is 0, no radix character is printed. (The radix character here is determined byLC_MONETARY, and may differ from that specified byLC_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.iOne argument of typedouble is converted using the locale's international currency format.nOne argument of typedouble is converted using the locale's national currency format.
Thestrfmon() function returns the number of characters placed in the arrays, not including the terminating null byte, provided the string, including the terminating null byte, fits. Otherwise, it setserrno toE2BIG, returns -1, and the contents of the array is undefined.
For an explanation of the terms used in this section, seeattributes(7). ┌───────────────────────────────┬───────────────┬────────────────┐ │Interface│Attribute│Value│ ├───────────────────────────────┼───────────────┼────────────────┤ │strfmon() │ Thread safety │ MT-Safe locale │ ├───────────────────────────────┼───────────────┼────────────────┤ │strfmon_l() │ Thread safety │ MT-Safe │ └───────────────────────────────┴───────────────┴────────────────┘
POSIX.1-2008.
POSIX.1-2001.
The call strfmon(buf, sizeof(buf), "[%^=*#6n] [%=*#6i]", 1234.567, 1234.567); outputs [€ **1234,57] [EUR **1 234,57] in thenl_NL locale. Thede_DE,de_CH,en_AU, anden_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 theman-pages (Linux kernel and C library user-space interface documentation) project. Information about the project can be found at ⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report for this manual page, see ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩. This page was obtained from the tarball man-pages-6.15.tar.gz fetched from ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on 2025-08-11. If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up- to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which isnot part of the original manual page), send a mail to man-pages@man7.orgLinux man-pages 6.15 2025-06-28strfmon(3)Pages that refer to this page:localeconv(3), printf(3), locale(7)
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