Manual Pages  — WCSCOLL

wcscoll – compare wide strings according to current collation

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES ERRORS SEE ALSO STANDARDS BUGS

Standard C Library (libc, -lc)

#include <wchar.h>

int
wcscoll(const wchar_t *s1, const wchar_t *s2);

The wcscoll() function compares the null-terminated strings s1 and s2 according to the current locale collation order. In the "C" locale, wcscoll() is equivalent to wcscmp().

The wcscoll() function returns an integer greater than, equal to, or less than 0, if s1 is greater than, equal to, or less than s2.

No return value is reserved to indicate errors; callers should set errno to 0 before calling wcscoll(). If it is non-zero upon return from wcscoll(), an error has occurred.

The wcscoll() function will fail if:

[EILSEQ]
	An invalid wide character code was specified.
[ENOMEM]
	Cannot allocate enough memory for temporary buffers.

The wcscoll() function conforms to ISO/IEC 9899:1999 ("ISO C99").

The current implementation of wcscoll() only works in single-byte LC_CTYPE locales, and falls back to using wcscmp() in locales with extended character sets.