wcpncpy - copy a fixed-size string of wide characters, returning a pointer to its end
#include <wchar.h>
wchar_t *wcpncpy(wchar_t *dest, const wchar_t *src, size_t n);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
wcpncpy():
- Since glibc 2.10:
_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 than 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.
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
wcpncpy() | Thread safety | MT-Safe |
POSIX.1-2008.
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