Section (3) lrint
lrint, lrintf, lrintl, llrint, llrintf, llrintl — round to nearest integer
||long double x
||long double x
These functions round their argument to the nearest integer value, using the current rounding direction (see fesetround(3)).
Note that unlike the rint(3) family of functions, the return type of these functions differs from that of their arguments.
These functions return the rounded integer value.
x is a NaN or
an infinity, or the rounded value is too large to be stored
in a long (long
long in the case of the
ll* functions), then a domain error occurs,
and the return value is unspecified.
See math_error(7) for information on how to determine whether an error has occurred when calling these functions.
The following errors can occur:
- Domain error:
xis a NaN or infinite, or the rounded value is too large
An invalid floating-point exception (
FE_INVALID) is raised.
These functions do not set
For an explanation of the terms used in this section, see attributes(7).
This page is part of release 4.16 of the Linux
man-pages project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
Copyright 2001 Andries Brouwer <aebcwi.nl>.
and Copyright 2008, Linux Foundation, written by Michael Kerrisk
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manual page may be incorrect or out-of-date.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
Formatted or processed versions of this manual, if unaccompanied by
the source, must acknowledge the copyright and authors of this work.