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   mempcpy    ( 3 )

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Имя (Name)

mempcpy, wmempcpy - copy memory area

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Синопсис (Synopsis)

#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <string.h>

void *mempcpy(void *restrict dest, const void *restrict src, size_t n);

#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <wchar.h>

wchar_t *wmempcpy(wchar_t *restrict dest, const wchar_t *restrict src, size_t n);

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Описание (Description)

The mempcpy() function is nearly identical to the memcpy(3) function. It copies n bytes from the object beginning at src into the object pointed to by dest. But instead of returning the value of dest it returns a pointer to the byte following the last written byte.

This function is useful in situations where a number of objects shall be copied to consecutive memory positions.

The wmempcpy() function is identical but takes wchar_t type arguments and copies n wide characters.

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Возвращаемое значение (Return value)

dest + n.

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Версии (Versions)

mempcpy() first appeared in glibc in version 2.1.

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Атрибуты (Attributes)

For an explanation of the terms used in this section, see attributes(7).

┌──────────────────────────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├──────────────────────────────────────┼───────────────┼─────────┤ │mempcpy(), wmempcpy() │ Thread safety │ MT-Safe │ └──────────────────────────────────────┴───────────────┴─────────┘

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Стандарты (Conforming to)

This function is a GNU extension.

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Примеры (Examples)

void *
       combine(void *o1, size_t s1, void *o2, size_t s2)
       {
           void *result = malloc(s1 + s2);
           if (result != NULL)
               mempcpy(mempcpy(result, o1, s1), o2, s2);
           return result;
       }

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Смотри также (See also)

memccpy(3), memcpy(3), memmove(3), wmemcpy(3)

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