CALLOC man page on Oracle

Man page or keyword search:  
man Server   33470 pages
apropos Keyword Search (all sections)
Output format
Oracle logo
[printable version]

CALLOC(3P)		   POSIX Programmer's Manual		    CALLOC(3P)

       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the	 corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.

       calloc - a memory allocator

       #include <stdlib.h>

       void *calloc(size_t nelem, size_t elsize);

       The calloc() function shall allocate unused space for an array of nelem
       elements each of whose size in bytes is elsize. The space shall be ini‐
       tialized to all bits 0.

       The order and contiguity of storage allocated by	 successive  calls  to
       calloc()	 is  unspecified.  The pointer returned if the allocation suc‐
       ceeds shall be suitably aligned so that it may be assigned to a pointer
       to  any	type  of  object  and then used to access such an object or an
       array of such objects in	 the  space  allocated	(until	the  space  is
       explicitly  freed  or  reallocated). Each such allocation shall yield a
       pointer to an object  disjoint  from  any  other	 object.  The  pointer
       returned	 shall	point  to the start (lowest byte address) of the allo‐
       cated space. If the space cannot be allocated, a null pointer shall  be
       returned.  If  the  size	 of  the space requested is 0, the behavior is
       implementation-defined: the value  returned  shall  be  either  a  null
       pointer or a unique pointer.

       Upon  successful	 completion  with both nelem and elsize non-zero, cal‐
       loc() shall return a pointer to the allocated space. If either nelem or
       elsize  is 0, then either a null pointer or a unique pointer value that
       can be successfully passed to free() shall be returned.	Otherwise,  it
       shall return a null pointer  and set errno to indicate the error.

       The calloc() function shall fail if:

       ENOMEM Insufficient memory is available.

       The following sections are informative.


       There  is  now  no  requirement	for  the implementation to support the
       inclusion of <malloc.h>.



       free(),	malloc(),  realloc(),	the   Base   Definitions   volume   of
       IEEE Std 1003.1-2001, <stdlib.h>

       Portions	 of  this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       --  Portable  Operating	System	Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003	by  the	 Institute  of
       Electrical  and	Electronics  Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained	online
       at .

IEEE/The Open Group		     2003			    CALLOC(3P)

List of man pages available for Oracle

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
Vote for polarhome
Free Shell Accounts :: the biggest list on the net