NAME
llround, llroundf,
llroundl, lround,
lroundf, lroundl —
convert to nearest integral
value
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
integer, 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
STANDARDS
The llround(),
llroundf(), llroundl(),
lround(), lroundf(), and
lroundl() functions conform to
ISO/IEC 9899:1999
(“ISO C99”).