1*2fe8fb19SBen Gras.\" Copyright (c) 2004 David Schultz <das@FreeBSD.org> 2*2fe8fb19SBen Gras.\" All rights reserved. 3*2fe8fb19SBen Gras.\" 4*2fe8fb19SBen Gras.\" Redistribution and use in source and binary forms, with or without 5*2fe8fb19SBen Gras.\" modification, are permitted provided that the following conditions 6*2fe8fb19SBen Gras.\" are met: 7*2fe8fb19SBen Gras.\" 1. Redistributions of source code must retain the above copyright 8*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer. 9*2fe8fb19SBen Gras.\" 2. Redistributions in binary form must reproduce the above copyright 10*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer in the 11*2fe8fb19SBen Gras.\" documentation and/or other materials provided with the distribution. 12*2fe8fb19SBen Gras.\" 13*2fe8fb19SBen Gras.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14*2fe8fb19SBen Gras.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15*2fe8fb19SBen Gras.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16*2fe8fb19SBen Gras.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17*2fe8fb19SBen Gras.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18*2fe8fb19SBen Gras.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19*2fe8fb19SBen Gras.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20*2fe8fb19SBen Gras.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21*2fe8fb19SBen Gras.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22*2fe8fb19SBen Gras.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23*2fe8fb19SBen Gras.\" SUCH DAMAGE. 24*2fe8fb19SBen Gras.\" 25*2fe8fb19SBen Gras.\" $FreeBSD: src/lib/msun/man/fdim.3,v 1.1 2004/06/30 07:04:01 das Exp $ 26*2fe8fb19SBen Gras.\" $NetBSD$ 27*2fe8fb19SBen Gras.\" 28*2fe8fb19SBen Gras.Dd June 29, 2004 29*2fe8fb19SBen Gras.Dt FDIM 3 30*2fe8fb19SBen Gras.Os 31*2fe8fb19SBen Gras.Sh NAME 32*2fe8fb19SBen Gras.Nm fdim , 33*2fe8fb19SBen Gras.Nm fdimf , 34*2fe8fb19SBen Gras.Nm fdiml 35*2fe8fb19SBen Gras.Nd positive difference functions 36*2fe8fb19SBen Gras.Sh LIBRARY 37*2fe8fb19SBen Gras.Lb libm 38*2fe8fb19SBen Gras.Sh SYNOPSIS 39*2fe8fb19SBen Gras.In math.h 40*2fe8fb19SBen Gras.Ft double 41*2fe8fb19SBen Gras.Fn fdim "double x" "double y" 42*2fe8fb19SBen Gras.Ft float 43*2fe8fb19SBen Gras.Fn fdimf "float x" "float y" 44*2fe8fb19SBen Gras.Ft long double 45*2fe8fb19SBen Gras.Fn fdiml "long double x" "long double y" 46*2fe8fb19SBen Gras.Sh DESCRIPTION 47*2fe8fb19SBen GrasThe 48*2fe8fb19SBen Gras.Fn fdim , 49*2fe8fb19SBen Gras.Fn fdimf , 50*2fe8fb19SBen Grasand 51*2fe8fb19SBen Gras.Fn fdiml 52*2fe8fb19SBen Grasfunctions return the positive difference between 53*2fe8fb19SBen Gras.Fa x 54*2fe8fb19SBen Grasand 55*2fe8fb19SBen Gras.Fa y . 56*2fe8fb19SBen GrasThat is, if 57*2fe8fb19SBen Gras.Fa x\- Ns Fa y 58*2fe8fb19SBen Grasis positive, then 59*2fe8fb19SBen Gras.Fa x\- Ns Fa y 60*2fe8fb19SBen Grasis returned. 61*2fe8fb19SBen GrasIf either 62*2fe8fb19SBen Gras.Fa x 63*2fe8fb19SBen Grasor 64*2fe8fb19SBen Gras.Fa y 65*2fe8fb19SBen Grasis an \*(Na, then an \*(Na is returned. 66*2fe8fb19SBen GrasOtherwise, the result is 67*2fe8fb19SBen Gras.Li +0.0 . 68*2fe8fb19SBen Gras.Pp 69*2fe8fb19SBen GrasOverflow or underflow may occur iff the exact result is not 70*2fe8fb19SBen Grasrepresentable in the return type. 71*2fe8fb19SBen GrasNo other exceptions are raised. 72*2fe8fb19SBen Gras.Sh SEE ALSO 73*2fe8fb19SBen Gras.Xr fabs 3 , 74*2fe8fb19SBen Gras.Xr fmax 3 , 75*2fe8fb19SBen Gras.Xr fmin 3 , 76*2fe8fb19SBen Gras.Xr math 3 77*2fe8fb19SBen Gras.Sh STANDARDS 78*2fe8fb19SBen GrasThe 79*2fe8fb19SBen Gras.Fn fdim , 80*2fe8fb19SBen Gras.Fn fdimf , 81*2fe8fb19SBen Grasand 82*2fe8fb19SBen Gras.Fn fdiml 83*2fe8fb19SBen Grasfunctions conform to 84*2fe8fb19SBen Gras.St -isoC-99 . 85*2fe8fb19SBen Gras.Sh HISTORY 86*2fe8fb19SBen GrasThese routines first appeared in 87*2fe8fb19SBen Gras.Fx 5.3 88*2fe8fb19SBen Grasand 89*2fe8fb19SBen Gras.Nx 5.1 . 90