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

memset(3) Library Functions Manual memset(3)

NAME top

   memset - fill memory with a constant byte

LIBRARY top

   Standard C library (_libc_, _-lc_)

SYNOPSIS top

   **#include <string.h>**

   **void *memset(void** _s_**[.**_n_**], int** _c_**, size_t** _n_**);**

DESCRIPTION top

   The **memset**() function fills the first _n_ bytes of the memory area
   pointed to by _s_ with the constant byte _c_.

RETURN VALUE top

   The **memset**() function returns a pointer to the memory area _s_.

ATTRIBUTES top

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

STANDARDS top

   C11, POSIX.1-2008.

HISTORY top

   POSIX.1-2001, C89, SVr4, 4.3BSD.

SEE ALSO top

   [bstring(3)](../man3/bstring.3.html), [bzero(3)](../man3/bzero.3.html), [swab(3)](../man3/swab.3.html), [wmemset(3)](../man3/wmemset.3.html)

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

Pages that refer to this page:mount_setattr(2), openat2(2), set_thread_area(2), bstring(3), bzero(3), NULL(3const), size_t(3type), void(3type), wmemset(3), aio(7), feature_test_macros(7), signal-safety(7)