Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

FreeBSD 11.0 - man page for atol (freebsd section 3)

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