llroundf(3) -- Linux man page

 

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)