# FreeBSD Manual Pages

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

NAME
llround, llroundf,	llroundl, lround, lroundf, lroundl -- convert to near-
est integral value

LIBRARY
Math Library (libm, -lm)

SYNOPSIS
#include <math.h>

long long
llround(double x);

long long
llroundf(float x);

long long
llroundl(long double x);

long
lround(double x);

long
lroundf(float x);

long
lroundl(long double x);

DESCRIPTION
The lround() function returns the integer nearest to its argument x,
rounding away from	zero in	halfway	cases.	If the rounded result is too
large to be represented as	a long value, an invalid exception is raised
and the return value is undefined.	 Otherwise, if x is not	an integer,
lround() may raise	an inexact exception.  When the	rounded	result is rep-
resentable	as a long, the expression lround(x) is equivalent to
(long)round(x) (although the former may be	more efficient).

The llround(), llroundf(),	llroundl(), lroundf() and lroundl() functions
differ from lround() only in their	input and output types.

lrint(3), math(3),	rint(3), round(3)

STANDARDS
The llround(), llroundf(),	llroundl(), lround(), lroundf(), and lroundl()
functions conform to ISO/IEC 9899:1999 ("ISO C99").

HISTORY
The float and double versions of these routines first appeared in
FreeBSD 5.4.  The long double versions appeared in	FreeBSD	6.0.

BSD				 April 7, 2005				   BSD
```

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | STANDARDS | HISTORY

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