wcpncpy(3)

1wcpncpy(3)                 Library Functions Manual                 wcpncpy(3)
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NAME

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

10       Standard C library (libc, -lc)
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SYNOPSIS

13       #include <wchar.h>
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15       wchar_t *wcpncpy(wchar_t dest[restrict .n],
16                        const wchar_t src[restrict .n],
17                        size_t n);
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19   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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21       wcpncpy():
22           Since glibc 2.10:
23               _POSIX_C_SOURCE >= 200809L
24           Before glibc 2.10:
25               _GNU_SOURCE
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DESCRIPTION

28       The wcpncpy() function is the wide-character  equivalent  of  the  stp‐
29       ncpy(3)  function.   It copies at most n wide characters from the wide-
30       character string pointed to by src, including the terminating null wide
31       (L'\0'),  to  the  array pointed to by dest.  Exactly n wide characters
32       are written at dest.  If the length wcslen(src) is smaller than n,  the
33       remaining  wide  characters  in the array pointed to by dest are filled
34       with L'\0' characters.  If the length wcslen(src) is  greater  than  or
35       equal to n, the string pointed to by dest will not be L'\0' terminated.
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37       The strings may not overlap.
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39       The programmer must ensure that there is room for at least n wide char‐
40       acters at dest.
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RETURN VALUE

43       wcpncpy() returns a pointer to the last wide  character  written,  that
44       is, dest+n-1.
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ATTRIBUTES

47       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
48       tributes(7).
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50       ┌────────────────────────────────────────────┬───────────────┬─────────┐
51       │Interface                                   │ Attribute     │ Value   │
52       ├────────────────────────────────────────────┼───────────────┼─────────┤
53       │wcpncpy()                                   │ Thread safety │ MT-Safe │
54       └────────────────────────────────────────────┴───────────────┴─────────┘
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STANDARDS

57       POSIX.1-2008.
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