floor(3) Library Functions Manual floor(3) JMENO floor, floorf, floorl - nejvetsi cele cislo ne vetsi nez x KNIHOVNA Math library (libm, -lm) POUZITI #include 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 Nevyskytuji se zadne chyby. ATRIBUTY Vysvetleni pojmu pouzitych v teto casti viz attributes(7). +-----------------------------------+------------------------+---------+ |Rozhrani | Atribut | Hodnota | +-----------------------------------+------------------------+---------+ |floor(), floorf(), floorl() | Zabezpeceni vlaken | 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 was 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).) This was removed in POSIX.1-2008. DALSI INFORMACE ceil(3), lrint(3), nearbyint(3), rint(3), round(3), trunc(3) PREKLAD Preklad teto prirucky do cestiny vytvorili Pavel Heimlich Tento preklad je bezplatna dokumentace; Prectete si GNU General Public License Version 3 nebo novejsi ohledne podminek autorskych prav. Neexistuje ZADNA ODPOVEDNOST. Pokud narazite na nejake chyby v prekladu teto prirucky, poslete e-mail na adresu . Linux man-pages 6.12 23. cervence 2024 floor(3)