1*05a0b428SJohn Marino.\" $OpenBSD: fabs.3,v 1.3 2013/07/18 10:14:48 schwarze Exp $ 2*05a0b428SJohn Marino.\" Copyright (c) 1991 The Regents of the University of California. 3*05a0b428SJohn Marino.\" All rights reserved. 4*05a0b428SJohn Marino.\" 5*05a0b428SJohn Marino.\" @(#)fabs.3 5.1 (Berkeley) 5/2/91 6*05a0b428SJohn Marino.\" Redistribution and use in source and binary forms, with or without 7*05a0b428SJohn Marino.\" modification, are permitted provided that the following conditions 8*05a0b428SJohn Marino.\" are met: 9*05a0b428SJohn Marino.\" 1. Redistributions of source code must retain the above copyright 10*05a0b428SJohn Marino.\" notice, this list of conditions and the following disclaimer. 11*05a0b428SJohn Marino.\" 2. Redistributions in binary form must reproduce the above copyright 12*05a0b428SJohn Marino.\" notice, this list of conditions and the following disclaimer in the 13*05a0b428SJohn Marino.\" documentation and/or other materials provided with the distribution. 14*05a0b428SJohn Marino.\" 3. Neither the name of the University nor the names of its contributors 15*05a0b428SJohn Marino.\" may be used to endorse or promote products derived from this software 16*05a0b428SJohn Marino.\" without specific prior written permission. 17*05a0b428SJohn Marino.\" 18*05a0b428SJohn Marino.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19*05a0b428SJohn Marino.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20*05a0b428SJohn Marino.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21*05a0b428SJohn Marino.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22*05a0b428SJohn Marino.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23*05a0b428SJohn Marino.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24*05a0b428SJohn Marino.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25*05a0b428SJohn Marino.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26*05a0b428SJohn Marino.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27*05a0b428SJohn Marino.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28*05a0b428SJohn Marino.\" SUCH DAMAGE. 29*05a0b428SJohn Marino.\" 30*05a0b428SJohn Marino.\" from: @(#)fabs.3 5.1 (Berkeley) 5/2/91 31*05a0b428SJohn Marino.\" 32*05a0b428SJohn Marino.Dd $Mdocdate: July 18 2013 $ 33*05a0b428SJohn Marino.Dt FABS 3 34*05a0b428SJohn Marino.Os 35*05a0b428SJohn Marino.Sh NAME 36*05a0b428SJohn Marino.Nm fabs , 37*05a0b428SJohn Marino.Nm fabsf , 38*05a0b428SJohn Marino.Nm fabsl 39*05a0b428SJohn Marino.Nd floating-point absolute value functions 40*05a0b428SJohn Marino.Sh SYNOPSIS 41*05a0b428SJohn Marino.In math.h 42*05a0b428SJohn Marino.Ft double 43*05a0b428SJohn Marino.Fn fabs "double x" 44*05a0b428SJohn Marino.Ft float 45*05a0b428SJohn Marino.Fn fabsf "float x" 46*05a0b428SJohn Marino.Ft long double 47*05a0b428SJohn Marino.Fn fabsl "long double x" 48*05a0b428SJohn Marino.Sh DESCRIPTION 49*05a0b428SJohn MarinoThe 50*05a0b428SJohn Marino.Fn fabs 51*05a0b428SJohn Marinofunction computes the absolute value of a floating-point number 52*05a0b428SJohn Marino.Fa x . 53*05a0b428SJohn MarinoThe 54*05a0b428SJohn Marino.Fn fabsf 55*05a0b428SJohn Marinofunction is a single precision version of 56*05a0b428SJohn Marino.Fn fabs . 57*05a0b428SJohn MarinoThe 58*05a0b428SJohn Marino.Fn fabsl 59*05a0b428SJohn Marinofunction is an extended precision version of 60*05a0b428SJohn Marino.Fn fabs . 61*05a0b428SJohn Marino.Sh RETURN VALUES 62*05a0b428SJohn MarinoThe 63*05a0b428SJohn Marino.Fn fabs , 64*05a0b428SJohn Marino.Fn fabsf 65*05a0b428SJohn Marinoand 66*05a0b428SJohn Marino.Fn fabsl 67*05a0b428SJohn Marinofunctions return the absolute value of 68*05a0b428SJohn Marino.Fa x . 69*05a0b428SJohn Marino.Sh SEE ALSO 70*05a0b428SJohn Marino.Xr abs 3 , 71*05a0b428SJohn Marino.Xr ceil 3 , 72*05a0b428SJohn Marino.Xr floor 3 , 73*05a0b428SJohn Marino.Xr rint 3 74*05a0b428SJohn Marino.Sh STANDARDS 75*05a0b428SJohn MarinoThe 76*05a0b428SJohn Marino.Fn fabs 77*05a0b428SJohn Marinofunction conforms to 78*05a0b428SJohn Marino.St -ansiC . 79*05a0b428SJohn Marino.Sh HISTORY 80*05a0b428SJohn MarinoAn 81*05a0b428SJohn Marino.Fn fabs 82*05a0b428SJohn Marinofunction first appeared in 83*05a0b428SJohn Marino.At v6 . 84