Linux 2.6 - man page for wcpncpy (linux section 3)
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WCPNCPY(3) Linux Programmer's Manual WCPNCPY(3)
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:
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, includ-
ing 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 remain-
ing 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
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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GNU 2011-10-01 WCPNCPY(3)
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