Originální popis anglicky:
lround, lroundf, lroundl, llround, llroundf, llroundl - round to nearest
integer, away from zero
Návod, kniha: Linux Programmer's Manual
#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);
Link with -lm.
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.
The rounded integer value.
- EDOM
- The magnitude of x is too large and
(math_errhandling & MATH_ERRNO) is non-zero.
C99.
ceil(3),
floor(3),
lrint(3),
nearbyint(3),
rint(3),
round(3)
