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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
commit3d08cd331c1adcf0d917392f7e527b3f00511748 (patch)
tree312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man3/lround.3
parentAdding debian version 6.7-2. (diff)
downloadmanpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz
manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-'\" t
-.\" Copyright 2001 Andries Brouwer <aeb@cwi.nl>.
-.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
-.\" <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH lround 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-lround, lroundf, lroundl, llround, llroundf, llroundl \- round to
-nearest integer
-.SH LIBRARY
-Math library
-.RI ( libm ", " \-lm )
-.SH SYNOPSIS
-.nf
-.B #include <math.h>
-.P
-.BI "long lround(double " x );
-.BI "long lroundf(float " x );
-.BI "long lroundl(long double " x );
-.P
-.BI "long long llround(double " x );
-.BI "long long llroundf(float " x );
-.BI "long long llroundl(long double " x );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-All functions shown above:
-.nf
- _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
-.fi
-.SH DESCRIPTION
-These functions round their argument to the nearest integer value,
-rounding halfway cases away from zero,
-regardless of the current rounding direction (see
-.BR fenv (3)).
-.P
-Note that unlike the
-.BR round (3)
-and
-.BR ceil (3),
-functions, the return type of these functions differs from
-that of their arguments.
-.SH RETURN VALUE
-These functions return the rounded integer value.
-.P
-If
-.I x
-is a NaN or an infinity,
-or the rounded value is too large to be stored in a
-.I long
-.RI ( "long long"
-in the case of the
-.B ll*
-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
-See
-.BR math_error (7)
-for information on how to determine whether an error has occurred
-when calling these functions.
-.P
-The following errors can occur:
-.TP
-Domain error: \fIx\fP is a NaN or infinite, or the rounded value is too large
-.\" .I errno
-.\" is set to
-.\" .BR EDOM .
-An invalid floating-point exception
-.RB ( FE_INVALID )
-is raised.
-.P
-These functions do not set
-.IR errno .
-.\" FIXME . Is it intentional that these functions do not set errno?
-.\" Bug raised: https://www.sourceware.org/bugzilla/show_bug.cgi?id=6797
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR lround (),
-.BR lroundf (),
-.BR lroundl (),
-.BR llround (),
-.BR llroundf (),
-.BR llroundl ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-C11, POSIX.1-2008.
-.SH HISTORY
-glibc 2.1.
-C99, POSIX.1-2001.
-.SH SEE ALSO
-.BR ceil (3),
-.BR floor (3),
-.BR lrint (3),
-.BR nearbyint (3),
-.BR rint (3),
-.BR round (3)