1.\" Copyright (c) 2005 David Schultz <das@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD: src/lib/msun/man/lrint.3,v 1.2 2005/01/13 10:43:01 ru Exp $ 26.\" 27.Dd January 11, 2005 28.Dt LRINT 3 29.Os 30.Sh NAME 31.Nm llrint , 32.Nm llrintf , 33.Nm lrint , 34.Nm lrintf 35.Nd "convert to integer" 36.Sh LIBRARY 37.Lb libm 38.Sh SYNOPSIS 39.In math.h 40.Ft "long long" 41.Fn llrint "double x" 42.Ft "long long" 43.Fn llrintf "float x" 44.Ft long 45.Fn lrint "double x" 46.Ft long 47.Fn lrintf "float x" 48.Sh DESCRIPTION 49The 50.Fn lrint 51function returns the integer nearest to its argument 52.Fa x 53according to the current rounding mode. 54If the rounded result is too large to be represented as a 55.Vt long 56value, an invalid exception is raised and the return value is undefined. 57Otherwise, if 58.Fa x 59is not an integer, 60.Fn lrint 61raises an inexact exception. 62When the rounded result is representable as a 63.Vt long , 64the expression 65.Fn lrint x 66is equivalent to 67.Po Vt long Pc Ns Fn rint x 68(although the former may be more efficient). 69.Pp 70The 71.Fn llrint , 72.Fn llrintf , 73and 74.Fn lrintf 75functions differ from 76.Fn lrint 77only in their input and output types. 78.Sh SEE ALSO 79.Xr lround 3 , 80.Xr math 3 , 81.Xr rint 3 , 82.Xr round 3 83.Sh STANDARDS 84The 85.Fn llrint , 86.Fn llrintf , 87.Fn lrint , 88and 89.Fn lrintf 90functions conform to 91.St -isoC-99 . 92.Sh HISTORY 93These routines first appeared in 94.Fx 5.4 . 95