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FreeBSD 11.0 - man page for strfmon_l (freebsd section 3)

STRFMON(3)						   BSD Library Functions Manual 						STRFMON(3)

strfmon -- convert monetary value to string
Standard C Library (libc, -lc)
#include <monetary.h> ssize_t strfmon(char * restrict s, size_t maxsize, const char * restrict format, ...); ssize_t strfmon_l(char * restrict s, size_t maxsize, locale_t loc, const char * restrict format, ...);
The strfmon() function places characters into the array pointed to by s as controlled by the string pointed to by format. No more than maxsize bytes are placed into the array. The strfmon_l() function does the same as strfmon() but takes an explicit locale rather than using the current locale. The format string is composed of zero or more directives: ordinary characters (not %), which are copied unchanged to the output stream; and conversion specifications, each of which results in fetching zero or more subsequent arguments. Each conversion specification is introduced by the % character. After the %, the following appear in sequence: o Zero or more of the following flags: =f A '=' character followed by another character f which is used as the numeric fill character. ^ Do not use grouping characters, regardless of the current locale default. + Represent positive values by prefixing them with a positive sign, and negative values by prefixing them with a negative sign. This is the default. ( Enclose negative values in parentheses. ! Do not include a currency symbol in the output. - Left justify the result. Only valid when a field width is specified. o An optional minimum field width as a decimal number. By default, there is no minimum width. o A '#' sign followed by a decimal number specifying the maximum expected number of digits after the radix character. o A '.' character followed by a decimal number specifying the number the number of digits after the radix character. o One of the following conversion specifiers: i The double argument is formatted as an international monetary amount. n The double argument is formatted as a national monetary amount. % A '%' character is written.
If the total number of resulting bytes including the terminating NUL byte is not more than maxsize, strfmon() returns the number of bytes placed into the array pointed to by s, not including the terminating NUL byte. Otherwise, -1 is returned, the contents of the array are indeterminate, and errno is set to indicate the error. The strfmon_l() function returns the same values as strfmon().
The strfmon() function will fail if: [E2BIG] Conversion stopped due to lack of space in the buffer. [EINVAL] The format string is invalid. [ENOMEM] Not enough memory for temporary buffers.
The strfmon() function conforms to IEEE Std 1003.1-2001 (``POSIX.1''). The strfmon_l() function conforms to IEEE Std 1003.1-2008 (``POSIX.1'').
The strfmon() function was implemented by Alexey Zelkin <>. This manual page was written by Jeroen Ruigrok van der Werven <> based on the standards' text.
The strfmon() function does not correctly handle multibyte characters in the format argument.
June 25, 2012 BSD

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