wcpncpy - copy a fixed-size string of wide characters, returning a pointer to its end
wchar_t *wcpncpy(wchar_t *dest, const wchar_t *src, size_t n);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
Since glibc 2.10: _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L Before glibc 2.10: _GNU_SOURCE
The wcpncpy() function is the wide-character equivalent of the stpncpy(3) function. It copies at most n wide characters from the wide-character string pointed to by src, including the terminating null wide (L \0 ), to the array pointed to by dest. Exactly n wide characters are written at dest. If the length wcslen(src) is smaller than n, the remaining wide characters in the array pointed to by dest are filled with L \0 characters. If the length wcslen(src) is greater or equal to n, the string pointed to by dest will not be L \0 terminated.
The strings may not overlap.
The programmer must ensure that there is room for at least n wide characters at dest.
wcpncpy() returns a pointer to the last wide character written, that is, dest + n - 1.
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