NAME

round, roundf, roundl —

round to nearest integral value

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <math.h>

double
round(double x);

float
roundf(float x);

long double
roundl(long double x);

DESCRIPTION

The round(), roundf(), and roundl() functions return the nearest integral value to x; if x lies halfway between two integral values, then these functions return the integral value with the larger absolute value (i.e., they round away from zero).

STANDARDS

These functions conform to ISO/IEC 9899:1999 (“ISO C99”).

HISTORY

The round() and roundf() functions appeared in FreeBSD 5.3. The roundl() function appeared in FreeBSD 6.0.