centos man page for atol

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

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

NAME
       atol, atoll - convert a string to a long integer

SYNOPSIS
       #include <stdlib.h>

       long atol(const char *str);
       long long atoll(const char *nptr);

DESCRIPTION
       The call atol(str) shall be equivalent to:

	      strtol(str, (char **)NULL, 10)

       The call atoll(str) shall be equivalent to:

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

       except that the handling of errors may differ. If the value cannot be represented, the behavior is undefined.

RETURN VALUE
       These functions shall return the converted value if the value can be represented.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       The atol() function is subsumed by strtol() but is retained because it is used extensively in existing code. If the number is not known	to
       be in range, strtol() should be used because atol() is not required to perform any error checking.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       strtol(), the Base Definitions volume of IEEE Std 1003.1-2001, <stdlib.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- 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 http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003								  ATOL(3P)