floor(3)                   Library Functions Manual                   floor(3)

JMENO
       floor, floorf, floorl - nejvetsi cele cislo ne vetsi nez x

KNIHOVNA
       Matematicka knihovna (libm, -lm)

POUZITI
       #include <math.h>

       double floor(double x);
       float floorf(float x);
       long double floorl(long double x);

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

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

POPIS
       These functions return the largest integral value that is not greater
       than x.

       Napriklad floor(0.5) je 0.0 a floor(-0.5) je -1.0.

NAVRATOVE HODNOTY
       These functions return the floor of x.

       If x is integral, +0, -0, NaN, or an infinity, x itself is returned.

CHYBOVE STAVY
       Neobjevuji se zadne chyby. POSIX.1-2001 popisuje celou skalu chyb
       tykajicich se preteceni. Viz POZNAMKY.

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

       +--------------------------------------------+---------------+---------+
       |Rozhrani                                    | Atribut       | Hodnota |
       +--------------------------------------------+---------------+---------+
       |floor(), floorf(), floorl()                 | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDY
       C11, POSIX.1-2008.

HISTORIE
       C99, POSIX.1-2001.

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

       SUSv2 and POSIX.1-2001 contain text about overflow (which might set
       errno to ERANGE, or raise an FE_OVERFLOW exception).  In practice, the
       result cannot overflow on any current machine, so this error-handling
       stuff is just nonsense.  (More precisely, overflow can happen only when
       the maximum value of the exponent is smaller than the number of
       mantissa bits.  For the IEEE-754 standard 32-bit and 64-bit
       floating-point numbers the maximum value of the exponent is 127
       (respectively, 1023), and the number of mantissa bits including the
       implicit bit is 24 (respectively, 53).)

DALSI INFORMACE
       ceil(3), lrint(3), nearbyint(3), rint(3), round(3), trunc(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                         floor(3)