memset_s(3) [osx man page]

MEMSET_S(3)						   BSD Library Functions Manual 					       MEMSET_S(3)

NAME

     memset_s -- copy a value to all bytes of a memory buffer

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #define __STDC_WANT_LIB_EXT1__ 1
     #include <string.h>

     errno_t
     memset_s(void *s, rsize_t smax, int c, rsize_t n);

DESCRIPTION

     The memset_s() function copies the value c (converted to an unsigned char) into each of the first n bytes of the memory buffer whose starting
     address is given by s.

     It is a runtime-consrtaints violation if s is a null pointer, or if either of smax or n is larger than RSIZE_MAX, or if smax is smaller than
     n.  If there is a runtime-constraints violation, and if s is not a null pointer, and if smax is not larger than RSIZE_MAX, then, before
     reporting the runtime-constraints violation, memset_s() copies smax bytes to the destination.

     In contrast to the memset(3) function, calls to memset_s() will never be ``optimised away'' by a compiler.  This property is required by the
     following sentences in section K.3.7.4.1 of ISO/IEC 9899:2011 (``ISO C11''):

	   Unlike  memset(),  any  call  to  the memset_s() function shall be evaluated strictly according to the rules of the abstract machine as
	   described in (5.1.2.3).  That is, any call to the memset_s() function shall assume that the memory indicated by s and n may be accessi-
	   ble in the future and thus must contain the values indicated by c.

RETURN VALUES

     The memset_s() function returns zero for success, or a non-zero error code if there was a runtime-constraints violation.

ERRORS

     memset_s() returns the following error codes.  It does not store the error code in the global errno variable:

     [EINVAL]		The s argument was a null pointer.

     [E2BIG]		One or both of smax or n was larger than RSIZE_MAX.

     [EOVERFLOW]	n was larger than smax.

SEE ALSO

     memset(3).

STANDARDS

     The memset_s() function conforms to ISO/IEC 9899:2011 (``ISO C11''), except that the set_constraint_handler_s() interface is not supported.

BSD
								 February 21, 2012							       BSD

Check Out this Related Man Page

ATOL(3) 						   BSD Library Functions Manual 						   ATOL(3)

NAME

     atol, atoll -- convert ASCII string to long or long long integer

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <stdlib.h>

     long
     atol(const char *nptr);

     long long
     atoll(const char *nptr);

DESCRIPTION

     The atol() function converts the initial portion of the string pointed to by nptr to long integer representation.

     It is equivalent to:

	   strtol(nptr, (char **)NULL, 10);

     The atoll() function converts the initial portion of the string pointed to by nptr to long long integer representation.

     It is equivalent to:

	   strtoll(nptr, (char **)NULL, 10);

COMPATIBILITY

     The FreeBSD implementations of the atol() and atoll() functions are thin wrappers around strtol() and strtoll() respectively, so these func-
     tions will affect the value of errno in the same way that the strtol() and strtoll() functions are able to.  This behavior of atol() and
     atoll() is not required by ISO/IEC 9899:1990 (``ISO C90'') or ISO/IEC 9899:1999 (``ISO C99''), but it is allowed by all of ISO/IEC 9899:1990
     (``ISO C90''), ISO/IEC 9899:1999 (``ISO C99'') and IEEE Std 1003.1-2001 (``POSIX.1'').

ERRORS

     The functions atol() and atoll() may affect the value of errno on an error.

SEE ALSO

     atof(3), atoi(3), strtod(3), strtol(3), strtoul(3)

STANDARDS

     The atol() function conforms to ISO/IEC 9899:1990 (``ISO C90'').  The atoll() function conforms to ISO/IEC 9899:1999 (``ISO C99'').

BSD
								   May 14, 2013 							       BSD

Linux and UNIX Man Pages

memset_s(3) [osx man page]

Check Out this Related Man Page