atoi(3)                    Library Functions Manual                    atoi(3)

JMENO
       atoi, atol, atoll - prevadi retezec na cislo typu integer

KNIHOVNA
       Standardni knihovna C (libc, -lc)

POUZITI
       #include <stdlib.h>

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

   Pozaduje mnozinu testovacich maker pro glibc (viz feature_test_macros(7)):

       atoll():
           _ISOC99_SOURCE
               || /* Glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

POPIS
       Funkce atoi() prevadi uvodni cast retezce nptr na cislo typu integer.
       Jeji chovani je totozne s funkci

           strtol(nptr, NULL, 10);

       krome toho, ze atoi() nedetekuje zadne chyby.

       Funkce atol() a atoll() se chovaji stejne jako atoi(), pouze prevadi
       uvodni cast retezce na typ long pripadne long long.

NAVRATOVE HODNOTY
       The converted value or 0 on error.

ATRIBUTY
       Vysvetleni pojmu pouzitych v teto casti viz attributes(7).

       +-------------------------------------+---------------+----------------+
       |Rozhrani                             | Atribut       | Hodnota        |
       +-------------------------------------+---------------+----------------+
       |atoi(), atol(), atoll()              | Thread safety | MT-Safe locale |
       +-------------------------------------+---------------+----------------+
VERZE
       POSIX.1 leaves the return value of atoi()  on error unspecified.  On
       glibc, musl libc, and uClibc, 0 is returned on error.

STANDARDY
       C11, POSIX.1-2008.

HISTORIE
       C99, POSIX.1-2001, SVr4, 4.3BSD.

       C89 a POSIX.1-1996 zahrnuji funkce atoi() a atol().

CHYBY
       errno is not set on error so there is no way to distinguish between 0
       as an error and as the converted value.  No checks for overflow or
       underflow are done.  Only base-10 input can be converted.  It is
       recommended to instead use the strtol()  and strtoul()  family of
       functions in new programs.

DALSI INFORMACE
       atof(3), strtod(3), strtol(3), strtoul(3)

PREKLAD
       Preklad teto prirucky do spanelstiny vytvorili Pavel Heimlich
       <tropikhajma@gmail.com>

       Tento preklad je bezplatna dokumentace; Prectete si GNU General Public
       License Version 3 <https://www.gnu.org/licenses/gpl-3.0.html> nebo
       novejsi ohledne podminek autorskych prav. Neexistuje ZADNA ODPOVEDNOST.

       Pokud narazite na nejake chyby v prekladu teto prirucky, poslete e-mail
       na adresu <translation-team-cs@lists.sourceforge.net>.

Linux man-pages 6.06           31. rijna 2023                          atoi(3)