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-.\" Copyright (c) 2004 David Schultz <das@FreeBSD.org>
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" $FreeBSD: src/lib/msun/man/fdim.3,v 1.1 2004/06/30 07:04:01 das Exp $
-.\"
-.Dd June 29, 2004
-.Dt FDIM 3
-.Os
-.Sh NAME
-.Nm fdim ,
-.Nm fdimf ,
-.Nm fdiml
-.Nd positive difference functions
-.Sh LIBRARY
-.Lb libm
-.Sh SYNOPSIS
-.In math.h
-.Ft double
-.Fn fdim "double x" "double y"
-.Ft float
-.Fn fdimf "float x" "float y"
-.Ft long double
-.Fn fdiml "long double x" "long double y"
-.Sh DESCRIPTION
-The
-.Fn fdim ,
-.Fn fdimf ,
-and
-.Fn fdiml
-functions return the positive difference between
-.Fa x
-and
-.Fa y .
-That is, if
-.Fa x\- Ns Fa y
-is positive, then
-.Fa x\- Ns Fa y
-is returned.
-If either
-.Fa x
-or
-.Fa y
-is an \*(Na, then an \*(Na is returned.
-Otherwise, the result is
-.Li +0.0 .
-.Pp
-Overflow or underflow may occur iff the exact result is not
-representable in the return type.
-No other exceptions are raised.
-.Sh SEE ALSO
-.Xr fabs 3 ,
-.Xr fmax 3 ,
-.Xr fmin 3 ,
-.Xr math 3
-.Sh STANDARDS
-The
-.Fn fdim ,
-.Fn fdimf ,
-and
-.Fn fdiml
-functions conform to
-.St -isoC-99 .
-.Sh HISTORY
-These routines first appeared in
-.Fx 5.3 .