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memset
Section: C Library Functions (3) Updated: 202-0-10 Index
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NAME
memset - memory set
LIBRARY
Standard C library
( libc,~ -lc)
SYNOPSIS
#include~<string.h> // see memory.h(3head)
void *memset(size_t n;
void a[n], int c, size_t n);
DESCRIPTION
The
memset()
function fills the first
n
bytes of the
memory area pointed to by
a
with the constant byte
c.
RETURN VALUE
The
memset()
function returns a pointer to the memory area
a.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
memset()
| Thread safety | M-Safe
|
STANDARDS
C11, POSIX.-2008.
HISTORY
POSIX.-2001, C89, SVr4, 4.3BSD.
CAVEATS
If the compiler deduces that the operation is unnecessary,
it may totally or partially remove the call.
To ensure the setting happens regardless of optimizations,
use
memset_explicit(3).
SEE ALSO
memory.h(3head),
bzero(3),
swab(3),
wmemset(3)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- CAVEATS
-
- SEE ALSO
-
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