lround(3) [freebsd man page]

LROUND(3)						   BSD Library Functions Manual 						 LROUND(3)

NAME

     llround, llroundf, llroundl, lround, lroundf, lroundl -- convert to nearest integral value

LIBRARY

     Math Library (libm, -lm)

SYNOPSIS

     #include <math.h>

     long long
     llround(double x);

     long long
     llroundf(float x);

     long long
     llroundl(long double x);

     long
     lround(double x);

     long
     lroundf(float x);

     long
     lroundl(long double x);

DESCRIPTION

     The lround() function returns the integer nearest to its argument x, rounding away from zero in halfway cases.  If the rounded result is too
     large to be represented as a long value, an invalid exception is raised and the return value is undefined.  Otherwise, if x is not an inte-
     ger, lround() may raise an inexact exception.  When the rounded result is representable as a long, the expression lround(x) is equivalent to
     (long)round(x) (although the former may be more efficient).

     The llround(), llroundf(), llroundl(), lroundf() and lroundl() functions differ from lround() only in their input and output types.

SEE ALSO

     lrint(3), math(3), rint(3), round(3)

STANDARDS

     The llround(), llroundf(), llroundl(), lround(), lroundf(), and lroundl() functions conform to ISO/IEC 9899:1999 (``ISO C99'').

HISTORY

     The float and double versions of these routines first appeared in FreeBSD 5.4.  The long double versions appeared in FreeBSD 6.0.

BSD
								   April 7, 2005							       BSD

Check Out this Related Man Page

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

NAME

       lround, lroundf, lroundl, llround, llroundf, llroundl - round to nearest integer, away from zero

SYNOPSIS

       #include <math.h>

       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);

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.

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)

								    2001-05-31								 LROUND(3)

Linux and UNIX Man Pages

lround(3) [freebsd man page]

Check Out this Related Man Page