The following table describes the monetary handling function APIs in libc.

Table 2-9 Monetary Formatting in libc

Library Routine	Description
`localeconv()`	Get monetary formatting information for the current locale
`strfmon()`	Convert monetary value to string representation

The following table describes the date and time formatting in libc.

Table 2-10 Date and Time Formatting in libc

Library Routine	Description
`getdate()`	Convert user format date and time.
`strftime()`	Convert date and time to string representation. The `%u` conversion function conforms to the X/Open CAE Specification, System Interfaces and Headers, Issue 4, Version 2. This function represents a weekday as a decimal number [1,7], with 1 now representing Monday.
`strptime()`	Date and time conversion.

The following table describes the multibyte handling function APIs in libc.

Table 2-11 Multibyte Handling in libc

Library Routine	Description
`btowc()`	Single-byte to wide-character conversion
`mbrlen()`	Get number of bytes in character (restartable)
`mbsinit()`	Determine conversion object status
`mbrtowc()`	Convert a character to a wide-character code (restartable)
`mbsrtowcs()`	Convert a character string to a wide-character string (restartable)
`mblen()`	Get number of bytes in a character
`mbtowc()`	Convert a character to a wide-character code
`mbstowcs()`	Convert a character string to a wide-character string

The following table describes the wide character and string handling in libc.

Table 2-12 Wide Character and String Handling in libc

Library Routine	Description
`wcsncat()`	Concatenate wide-character strings to length n
`wsdup()`	Duplicate wide-character string
`wcscmp()`	Compare wide-character strings
`wcsncmp()`	Compare wide-character strings to length n
`wcscpy()`	Copy wide-character strings
`wcsncpy()`	Copy wide-character strings to length n
`wcschr()`	Find character in wide-character string
`wcsrchr()`	Find character in wide-character string from right
`wcslen()`	Get length of wide-character string
`wscol()`	Return display width of wide-character string
`wcsspn()`	Return span of one wide-character string in another
`wcscspn()`	Return span of one wide-character string not in another
`wcspbrk()`	Return pointer to one wide-character string in another
`wcstok()`	Move token through wide-character string
`wscwcs()`	Find string in wide-character string
`wcstombs()`	Convert wide-character string to multibyte string
`wctomb()`	Convert wide-character to multibyte character
`wcwidth()`	Determine number of column positions of a wide character
`wcswidth()`	Determine number of column positions of a wide-character string
`wctob()`	Wide character to single byte conversion
`wcrtomb()`	Convert a wide-character code to a character (restartable)
`wcstol()`	Convert wide-character string to long integer
`wcstoul()`	Convert wide-character string to unsigned long integer
`wcstod()`	Convert wide-character string to double precision
`wcsrtombs()`	Convert a wide-character string to a character string (restartable)
`wcscat()`	Concatenate wide-character strings

The following table describes the formatted wide-character input and output in libc.

Table 2-13 Formatted Wide-character Input and Output in libc

Library Routine	Description

`wsprintf()`	Generate wide-character string according to format
`wsscanf()`	Formatted input conversion
`fwprintf()`	Print formatted wide-character output
`fwscanf()`	Convert formatted wide-character input
`wprintf()`	Print formatted wide-character output
`wscanf()`	Convert formatted wide-character input
`swprintf()`	Print formatted wide-character output
`swscanf()`	Convert formatted wide-character input
`vfwprintf()`	Wide-character formatted output of a `stdarg` argument list
`vswprintf()`	Wide-character formatted output of a `stdarg` argument list

This table describes the wide strings function APIs in libc.

Table 2-14 Wide Stringslibc

Library Routine	Description
`wscasecmp()`	Compare wide-character strings, ignore case differences
`wsncasecmp()`	Process code-string operations
`wcsstr()`	Find a wide-character substring
`wmemchr()`	Find a wide character in memory
`wmemcmp()`	Compare wide characters in memory
`wmemcpy()`	Copy wide characters in memory
`wmemmove()`	Copy wide characters in memory with overlapping areas
`wmemset()`	Set wide characters in memory

The following table describes the wide-character input and output in libc.

Table 2-15 Wide-character Input and Output inlibc

Library Routine	Description
`fgetwc()`	Get multibyte character from stream, convert to wide character
`getwchar()`	Get multibyte character from `stdin`, convert to wide character
`fgetws()`	Get multibyte string from stream, convert to wide character
`getws()`	Get multibyte string from `stdin`, convert to wide character
`fputwc()`	Convert wide character to multibyte character, puts to stream
`fwide()`	Set stream orientation
`putwchar()`	Convert wide character to multibyte character, puts to `stdin`
`fputws()`	Convert wide character to multibyte string, puts to stream
`putws()`	Convert wide character to multibyte string, puts to `stdin`
`ungetwc()`	Push a wide character back into input stream.

`genmsg` Utility

The new genmsg utility can be used with the catgets() family of functions to create internationalized source message catalogs. The utility examines a source program file for calls to functions in catgets and builds a source message catalog from the information it finds. For example:

% cat example.c
	...
	/* NOTE: %s is a file name */
	printf(catgets(catd, 5, 1, "%s cannot be opened."));
	/* NOTE: "Read" is a past participle, not a present
 
			tense verb */
	printf(catgets(catd, 5, 1, "Read"));
	...
% genmsg -c NOTE example.c
The following file(s) have been created.
			new msg file = "example.c.msg"
% cat example.c.msg
$quote "
$set 5
1			"%s cannot be opened"
	/* NOTE: %s is a file name */
2			"Read"
	/* NOTE: "Read" is a past participle, not a present
			tense verb */

In the above example, genmsg is run on the source file example.c, which produces a source message catalog named example.c.msg. The -c option with the argument NOTE causes genmsg to include comments in the catalog. If a comment in the source program contains the string specified, the comment appears in the message catalog after the next string extracted from a call to catgets.

You can use genmsg to number the messages in a message set automatically.

For more information, see the genmsg(1) man page.

To generate a formatted message catalog file, use the gencat(1) utility.

For information on the message extraction utility for Portable Message files (.po files) and also on how to generate message object files (.mo files) from the .po files, see the xgettext(1), and msgfmt(1) man pages, respectively.


2. General Internationalization Features Internationalization APIs in `libc`

genmsg Utility

`genmsg` Utility