wcpncpy(3) - Linux manual page (original) (raw)

wcpncpy(3) Library Functions Manual wcpncpy(3)

NAME top

   wcpncpy - copy a fixed-size string of wide characters, returning a
   pointer to its end

LIBRARY top

   Standard C library (_libc_, _-lc_)

SYNOPSIS top

   **#include <wchar.h>**

   **wchar_t *wcpncpy(wchar_t** _dest_**[restrict .**_n_**],**
                    **const wchar_t** _src_**[restrict .**_n_**],**
                    **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

DESCRIPTION top

   The **wcpncpy**() function is the wide-character equivalent of the
   [stpncpy(3)](../man3/stpncpy.3.html) 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_.

RETURN VALUE top

   **wcpncpy**() returns a pointer to the last wide character written,
   that is, _dest_+_n_-1.

ATTRIBUTES top

   For an explanation of the terms used in this section, see
   [attributes(7)](../man7/attributes.7.html).
   ┌──────────────────────────────────────┬───────────────┬─────────┐
   │ **Interface** │ **Attribute** │ **Value** │
   ├──────────────────────────────────────┼───────────────┼─────────┤
   │ **wcpncpy**()                            │ Thread safety │ MT-Safe │
   └──────────────────────────────────────┴───────────────┴─────────┘

STANDARDS top

   POSIX.1-2008.

SEE ALSO top

   [stpncpy(3)](../man3/stpncpy.3.html), [wcsncpy(3)](../man3/wcsncpy.3.html)

COLOPHON top

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Linux man-pages 6.10 2024-07-23 wcpncpy(3)

Pages that refer to this page:stpncpy(3), signal-safety(7)