.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
.\" <mtk.manpages@gmail.com>
.\"
+.\" %%%LICENSE_START(VERBATIM)
.\" 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.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
+.\" %%%LICENSE_END
.\"
-.TH LRINT 3 2008-08-11 "" "Linux Programmer's Manual"
+.TH LRINT 3 2017-09-15 "" "Linux Programmer's Manual"
.SH NAME
lrint, lrintf, lrintl, llrint, llrintf, llrintl \- round to nearest integer
.SH SYNOPSIS
.nf
.B #include <math.h>
-.sp
+.PP
.BI "long int lrint(double " x );
-.br
.BI "long int lrintf(float " x );
-.br
.BI "long int lrintl(long double " x );
-.sp
+.PP
.BI "long long int llrint(double " x );
-.br
.BI "long long int llrintf(float " x );
-.br
.BI "long long int llrintl(long double " x );
.fi
-.sp
+.PP
Link with \fI\-lm\fP.
-.sp
+.PP
.in -4n
Feature Test Macro Requirements for glibc (see
.BR feature_test_macros (7)):
.in
-.sp
+.PP
.ad l
All functions shown above:
.RS 4
-_XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE ||
-_POSIX_C_SOURCE\ >=\ 200112L;
-.br
-or
-.I cc\ -std=c99
+_ISOC99_SOURCE || _POSIX_C_SOURCE\ >=\ 200112L
.RE
.ad
.SH DESCRIPTION
These functions round their argument to the nearest integer value,
using the current rounding direction (see
.BR fesetround (3)).
-
-Note that unlike
-.BR rint (3),
-etc., the return type of these functions differs from
+.PP
+Note that unlike the
+.BR rint (3)
+family of functions,
+the return type of these functions differs from
that of their arguments.
-.SH "RETURN VALUE"
+.SH RETURN VALUE
These functions return the rounded integer value.
-
+.PP
If
.I x
is a NaN or an infinity,
.RI ( "long long"
in the case of the
.B ll*
-functions)
+functions),
then a domain error occurs, and the return value is unspecified.
.\" The return value is -(LONG_MAX - 1) or -(LLONG_MAX -1)
.SH ERRORS
.\" Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6798
.SH VERSIONS
These functions first appeared in glibc in version 2.1.
-.SH "CONFORMING TO"
-C99, POSIX.1-2001.
-.SH "SEE ALSO"
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lbw30 lb lb
+l l l.
+Interface Attribute Value
+T{
+.BR lrint (),
+.BR lrintf (),
+.BR lrintl (),
+.br
+.BR llrint (),
+.BR llrintf (),
+.BR llrintl ()
+T} Thread safety MT-Safe
+.TE
+.SH CONFORMING TO
+C99, POSIX.1-2001, POSIX.1-2008.
+.SH SEE ALSO
.BR ceil (3),
.BR floor (3),
.BR lround (3),