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) ; |
![[Note]](../stylesheet/note.png) |
Note |
Compile with −std=c99 ; link with
−lm .
|
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. Note that unlike round(3), ceil(3), etc., the return
type of these functions differs from that of their
arguments.
ERRORS
- EDOM
-
The magnitude of x
is too large and
(math_errhandling &
MATH_ERRNO) is non-zero.
SEE ALSO
ceil(3), floor(3), lrint(3), nearbyint(3), rint(3), round(3)
Copyright 2001 Andries Brouwer <aeb@cwi.nl>.
Permission is granted to make and distribute verbatim copies of this
manual provided the copyright notice and this permission notice are
preserved on all copies.
Permission is granted to copy and distribute modified versions of this
manual under the conditions for verbatim copying, provided that the
entire resulting derived work is distributed under the terms of a
permission notice identical to this one.
Since the Linux kernel and libraries are constantly changing, this
manual page may be incorrect or out-of-date. The author(s) assume no
responsibility for errors or omissions, or for damages resulting from
the use of the information contained herein. The author(s) may not
have taken the same level of care in the production of this manual,
which is licensed free of charge, as they might when working
professionally.
Formatted or processed versions of this manual, if unaccompanied by
the source, must acknowledge the copyright and authors of this work.
|