freebsd man page for atol

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