strxfrm - string transformation
size_t strxfrm(char *dest, const char *src, size_t n
The strxfrm() function transforms the src string into a form
such that the result of strcmp() on two strings that have
been transformed with strxfrm() is the same as the result of
strcoll() on the two strings before their transformation.
The first n characters of the transformed string are placed
in dest. The transformation is based on the program's
current locale for category LC_COLLATE. (See setlocale(3)).
The strxfrm() function returns the number of bytes required
to store the transformed string in dest excluding the ter-
minating `\0' character. If the value returned is n or
more, the contents of dest are indeterminate.
SVID 3, BSD 4.3, ISO 9899
In the "POSIX" or "C" locales strxfrm() is equivalent to
copying the string with strncpy().
bcmp(3), memcmp(3), strcasecmp(3), strcoll(3), setlocale(3)