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| <h3 class="section">5.5 <code>memccpy</code>—copy memory regions with end-token check</h3> |
| |
| <p><strong>Synopsis</strong> |
| <pre class="example"> #include <string.h> |
| void* memccpy(void *restrict <var>out</var>, const void *restrict <var>in</var>, |
| int <var>endchar</var>, size_t <var>n</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| This function copies up to <var>n</var> bytes from the memory region |
| pointed to by <var>in</var> to the memory region pointed to by |
| <var>out</var>. If a byte matching the <var>endchar</var> is encountered, |
| the byte is copied and copying stops. |
| |
| <p>If the regions overlap, the behavior is undefined. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| <code>memccpy</code> returns a pointer to the first byte following the |
| <var>endchar</var> in the <var>out</var> region. If no byte matching |
| <var>endchar</var> was copied, then <code>NULL</code> is returned. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| <code>memccpy</code> is a GNU extension. |
| |
| <p><code>memccpy</code> requires no supporting OS subroutines. |
| |
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