lround, lroundf, lroundl, llround, llroundf, llroundl: zaokrouhlit na nejbližší celé číslo, od nuly

Originální popis anglicky: lround, lroundf, lroundl, llround, llroundf, llroundl - round to nearest integer, away from zero

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#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.

POPIS / INSTRUKCE

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.

NÁVRATOVÁ HODNOTA

The rounded integer value.

CHYBY / ERRORY

EDOM

The magnitude of x is too large and (math_errhandling & MATH_ERRNO) is non-zero.

ODPOVÍDAJÍCÍ

C99.

SOUVISEJÍCÍ

ceil(3), floor(3), lrint(3), nearbyint(3), rint(3), round(3)