floor(3)                   Library Functions Manual                   floor(3)

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       floor, floorf, floorl - <?><?><?><?><?>
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LIBRARY
       Math library (libm, -lm)

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       #include <math.h>

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

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   <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?> glibc
   (<?><?>. feature_test_macros(7)):

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

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       <?><?> <?><?><?><?><?><?><?><?><?><?><?> x.

       <?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?><?><?><?><?> floor(0.5)
       <?><?><?><?><?> 0.0, <?> floor(-0.5) -- -1.0.

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       <?><?><?><?><?> <?><?><?><?><?> <?><?> x.

       <?><?><?><?> x -- <?><?><?><?><?>, +0, -0, NaN <?><?><?>
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       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> x.

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       <?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?>. <?>
       <?><?><?><?><?><?><?><?><?><?> POSIX.1-2001
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       <?><?><?><?><?><?><?><?><?><?><?><?><?>, <?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>.

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       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?> attributes(7).

       +----------------------------+----------------------------------------------------------+--------------------------+
       |<?><?><?><?><?><?><?><?><?> | <?><?><?><?><?><?><?>                                    | <?><?><?><?><?><?><?><?> |
       +----------------------------+----------------------------------------------------------+--------------------------+
       |floor(), floorf(), floorl() | <?><?><?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?> | MT-Safe                  |
       +----------------------------+----------------------------------------------------------+--------------------------+
<?><?><?><?><?><?><?><?><?>
       C11, POSIX.1-2008.

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       C99, POSIX.1-2001.

       <?><?><?><?><?><?><?>, <?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?><?> double, <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?> SVr4, 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).)

<?><?>. <?><?><?><?><?>
       ceil(3), lrint(3), nearbyint(3), rint(3), round(3), trunc(3)

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       <?><?><?><?><?><?> Azamat Hackimov <azamat.hackimov@gmail.com>, Dmitry
       Bolkhovskikh <d20052005@yandex.ru>, Yuri Kozlov <yuray@komyakino.ru>
       <?> <?><?><?><?> <?><?><?><?><?><?> <pavia00@gmail.com>

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       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> GNU
       <?><?><?><?><?><?> 3 <https://www.gnu.org/licenses/gpl-3.0.html>
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       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

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       <?><?><?><?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?><?><?><?>,
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?><?> <man-pages-ru-talks@lists.sourceforge.net>.

Linux man-pages 6.06  31 <?><?><?><?><?><?><?> 2023 <?>.              floor(3)