LROUND(3)		   Linux Programmers Manual		    LROUND(3)



NAME
       lround,	lroundf, lroundl, llround, llroundf, llroundl - round to near
       est integer, away from zero

SYNOPSIS
       #include 

       long int lround(double x);
       long int lroundf(float x);
       long int lroundl(long double x);

       long long int llround(double x);
       long long int llroundf(float x);
       long long int llroundl(long double x);

       Link with -lm.

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

       All functions shown above: _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or
       cc -std=c99

DESCRIPTION
       These  functions  round	their  argument  to the nearest integer value,
       rounding away from zero, regardless of the current rounding  direction.
       If  x  is infinite or NaN, or if the rounded value is outside the range
       of the return type, the numeric result is unspecified.  A domain  error
       may occur if the magnitude of x is too large.

RETURN VALUE
       The  rounded  integer value.  Note that unlike round(3), ceil(3), etc.,
       the return type of these functions differs from	that  of  their  argu
       ments.

ERRORS
       EDOM   The  magnitude  of  x  is  too  large  and  (math_errhandling  &
	      MATH_ERRNO) is non-zero.

CONFORMING TO
       C99.

SEE ALSO
       ceil(3), floor(3), lrint(3), nearbyint(3), rint(3), round(3)

COLOPHON
       This page is part of release 3.05 of the Linux  man-pages  project.   A
       description  of	the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



				  2007-07-26			     LROUND(3)