Unix/Linux Go Back    

SuSE 11.3 - man page for floorl (suse section 3)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)

FLOOR(3)			    Linux Programmer's Manual				 FLOOR(3)

       floor, floorf, floorl - largest integral value not greater than argument

       #include <math.h>

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

       Link with -lm.

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       floorf(), floorl(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE;
       or cc -std=c99

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

       For example, floor(0.5) is 0.0, and floor(-0.5) is -1.0.

       These functions return the floor of x.

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

       No errors occur.  POSIX.1-2001 documents a range error for overflows, but see NOTES.

       C99, POSIX.1-2001.  The variant returning double also conforms to 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 128 (respectively, 1024), and the number of mantissa bits is 24
       (respectively, 53).)

       ceil(3), lrint(3), nearbyint(3), rint(3), round(3), trunc(3)

       This page is part of release 3.25 of the Linux man-pages project.  A  description  of  the
       project,   and	information  about  reporting  bugs,  can  be  found  at  http://www.ker-

					    2008-10-06					 FLOOR(3)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums

All times are GMT -4. The time now is 05:44 PM.