LROUND(3) BSD Programmer's Manual LROUND(3)
llround, llroundf, lround, lroundf - convert to nearest integral value
#include <math.h>
long long
llround(double x);
long long
llroundf(float x);
long
lround(double x);
long
lroundf(float x);
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(), and lroundf() functions differ from lround()
only in their input and output types.
lrint(3), math(3), rint(3)
The llround(), llroundf(), lround(), and lroundf() functions conform to
ISO/IEC 9899:1999 ("ISO C99").
MirOS BSD #10-current April 7, 2005 1
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