# roundf(3) [netbsd man page]

```ROUND(3)						   BSD Library Functions Manual 						  ROUND(3)

NAME
round, roundf -- round to nearest integral value

LIBRARY
Math Library (libm, -lm)

SYNOPSIS
#include <math.h>

double
round(double x);

float
roundf(float x);

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

ceil(3), floor(3), math(3), rint(3), trunc(3)

STANDARDS
The round() and roundf() functions conform to ISO/IEC 9899:1999 (``ISO C99'').

HISTORY
The round() and roundf() functions appeared in NetBSD 2.0.

BSD								   July 15, 2004							       BSD```

## Check Out this Related Man Page

```ROUND(3)						   BSD Library Functions Manual 						  ROUND(3)

NAME
round, lround, llround -- round to integral value, regardless of rounding direction

SYNOPSIS
#include <math.h>

double
round(double x);

float
roundf(float x);

long int
lround(double x);

long int
lroundf(float x);

long long int
llround(double x);

long long int
llroundf(float x);

DESCRIPTION
The round() and roundf() functions return the integral value nearest to x rounding half-way cases away from zero, regardless of the current
rounding direction.

The lround() , lroundf() , llround() and llroundf() functions return the integral value nearest to x (rounding half-way cases away from zero,
regardless of the current rounding direction) in the return formats specified.  If the rounded value is outside the range of the return type,
the numeric result is unspecified and the "invalid" floating-point exception is raised. A range error may occur if the magnitude of x is too
large.

SPECIAL VALUES
round(+-0) returns +-0.

round(+-infinity) returns +-infinity.

The round() functions may, but are not required to, raise the "inexact" floating-point exception for non-integer numeric arguments.

The lround() and llround() functions need not raise the "inexact" floating-point exception for non-integer arguments that round to within the
range of the return type.