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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 round 3 (date) "Linux man-pages (unreleased)"
-.SH NAME
-round, roundf, roundl \- round to nearest integer, away from zero
-.SH LIBRARY
-Math library
-.RI ( libm ", " \-lm )
-.SH SYNOPSIS
-.nf
-.B #include <math.h>
-.PP
-.BI "double round(double " x );
-.BI "float roundf(float " x );
-.BI "long double roundl(long double " x );
-.fi
-.PP
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.PP
-.BR round (),
-.BR roundf (),
-.BR roundl ():
-.nf
-    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
-.fi
-.SH DESCRIPTION
-These functions round
-.I x
-to the nearest integer, but
-round halfway cases away from zero (regardless of the current rounding
-direction, see
-.BR fenv (3)),
-instead of to the nearest even integer like
-.BR rint (3).
-.PP
-For example,
-.I round(0.5)
-is 1.0, and
-.I round(\-0.5)
-is \-1.0.
-.SH RETURN VALUE
-These functions return the rounded integer value.
-.PP
-If
-.I x
-is integral, +0, \-0, NaN, or infinite,
-.I x
-itself is returned.
-.SH ERRORS
-No errors occur.
-POSIX.1-2001 documents a range error for overflows, but see NOTES.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.ad l
-.nh
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface	Attribute	Value
-T{
-.BR round (),
-.BR roundf (),
-.BR roundl ()
-T}	Thread safety	MT-Safe
-.TE
-.hy
-.ad
-.sp 1
-.SH STANDARDS
-C11, POSIX.1-2008.
-.SH HISTORY
-glibc 2.1.
-C99, POSIX.1-2001.
-.SH NOTES
-POSIX.1-2001 contains text about overflow (which might set
-.I errno
-to
-.BR ERANGE ,
-or raise an
-.B FE_OVERFLOW
-exception).
-In practice, the result cannot overflow on any current machine,
-so this error-handling stuff is just nonsense.
-.\" The POSIX.1-2001 APPLICATION USAGE SECTION discusses this point.
-(More precisely, overflow can happen only when the maximum value
-of the exponent is smaller than the number of mantissa bits.
-For the IEEE-754 standard 32-bit and 64-bit floating-point numbers
-the maximum value of the exponent is 127 (respectively, 1023),
-and the number of mantissa bits
-including the implicit bit
-is 24 (respectively, 53).)
-.PP
-If you want to store the rounded value in an integer type,
-you probably want to use one of the functions described in
-.BR lround (3)
-instead.
-.SH SEE ALSO
-.BR ceil (3),
-.BR floor (3),
-.BR lround (3),
-.BR nearbyint (3),
-.BR rint (3),
-.BR trunc (3)