atan(3)                    Library Functions Manual                    atan(3)

JMENO
       atan, atanf, atanl - funkce arkustangens

KNIHOVNA
       Matematicka knihovna (libm, -lm)

POUZITI
       #include <math.h>

       double atan(double x);
       float atanf(float x);
       long double atanl(long double x);

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

       atanf(), atanl():
           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
               || /* Od glibc 2.19: */ _DEFAULT_SOURCE
               || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

POPIS
       These functions calculate the principal value of the arc tangent of x;
       that is the value whose tangent is x.

NAVRATOVE HODNOTY
       On success, these functions return the principal value of the arc
       tangent of x in radians; the return value is in the range
       [-pi/2, pi/2].

       Je-li x NaN, je vraceno NaN.

       Je-li x +0 (-0), je vraceno +0 (-0).

       Pokud je x plus nebo minus nekonecno, je vraceno +pi/2 nebo -pi/2.

CHYBOVE STAVY
       Nevyskytuji se zadne chyby.

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

       +--------------------------------------------+---------------+---------+
       |Rozhrani                                    | Atribut       | Hodnota |
       +--------------------------------------------+---------------+---------+
       |atan(), atanf(), atanl()                    | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDY
       C11, POSIX.1-2008.

HISTORIE
       C99, POSIX.1-2001.

       Varianta vracejici double splnuje take SVr4 a 4.3BSD, C89.

DALSI INFORMACE
       acos(3), asin(3), atan2(3), carg(3), catan(3), cos(3), sin(3), tan(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                          atan(3)