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C Library Reference
W
wcsncpy()
Copy a wide-character string, to a maximum length

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
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QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
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        Copy a wide-character string
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        Concatenate two wide-character strings, up to a maximum length
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        Compare two wide-character strings, up to a given length
      - wcsncpy()
        Copy a wide-character string, to a maximum length
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        Find the first wide character in a string that's in a given character set
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        Count the wide characters at the beginning of a string that are in a given character set
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        Convert a wide-character string into a double, float, or long double
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        Convert a wide-character string into an integer
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        Break a wide-character string into tokens
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        Convert a wide-character string into a long integer
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        Convert a wide-character string into an unsigned long integer
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        Transform one wide-character string into another, to a given length
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        Define a wide-character mapping
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        Define a wide-character class
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        Determine the number of column positions of a wide character
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        Locate the first occurrence of a wide character in a buffer
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        Compare the wide characters in two buffers
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        Copy wide characters from one buffer to another
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        Copy wide characters from one buffer to another
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        Set wide characters in memory
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wcsncpy()

QNX SDP8.0C Library ReferenceAPIDeveloper

Copy a wide-character string, to a maximum length

Synopsis:

#include <wchar.h>

wchar_t * wcsncpy( wchar_t * ws1,
                   const wchar_t * ws2,
                   size_t n );

Arguments:

ws1: A pointer to where you want to copy the wide-character string.
ws2: The wide-character string that you want to copy.
n: The maximum number of wide characters that you want to copy.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The wcsncpy() function copies the string pointed to by ws2, including the terminating NUL wide character, into the array pointed to by ws1, to a maximum of n wide characters. It adds NUL characters if ws2 has fewer than n characters but doesn't add a NUL if ws2 has more.

Note:

This function isn't guaranteed to work properly for copying overlapping strings; use wmemmove() instead.

Returns:

The same pointer as ws1.

Classification:

ANSI, POSIX 1003.1


Safety:
Cancellation point	No
Signal handler	Yes
Thread	Yes

Page updated: August 09, 2024