:: RootR ::  Hosting Order Map Login   Secure Inter-Network Operations  
 
atoi(3) - phpMan

Command: man perldoc info search(apropos)  


ATOI(3)                             Linux Programmer's Manual                             ATOI(3)



NAME
       atoi, atol, atoll - convert a string to an integer

SYNOPSIS
       #include <stdlib.h>

       int atoi(const char *nptr);
       long atol(const char *nptr);
       long long atoll(const char *nptr);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       atoll():
           _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
           _POSIX_C_SOURCE >= 200112L;
           or cc -std=c99

DESCRIPTION
       The atoi() function converts the initial portion of the string pointed to by nptr to  int.
       The behavior is the same as

           strtol(nptr, NULL, 10);

       except that atoi() does not detect errors.

       The  atol()  and atoll() functions behave the same as atoi(), except that they convert the
       initial portion of the string to their return type of long or long long.

RETURN VALUE
       The converted value.

ATTRIBUTES
   Multithreading (see pthreads(7))
       The atoi(), atol(), and atoll() functions are thread-safe with  exceptions.   These  func‐
       tions  can  be  safely  used in multithreaded applications, as long as setlocale(3) is not
       called to change the locale during their execution.

CONFORMING TO
       SVr4, POSIX.1-2001, 4.3BSD, C99.  C89 and POSIX.1-1996 include the  functions  atoi()  and
       atol() only.

NOTES
       Linux  libc  provided  atoq()  as  an obsolete name for atoll(); atoq() is not provided by
       glibc.

SEE ALSO
       atof(3), strtod(3), strtol(3), strtoul(3)

COLOPHON
       This page is part of release 3.74 of the Linux man-pages project.  A  description  of  the
       project,  information  about  reporting  bugs, and the latest version of this page, can be
       found at http://www.kernel.org/doc/man-pages/.



GNU                                         2014-08-19                                    ATOI(3)


/man
rootr.net - man pages