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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:54:44 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:54:44 -0400
commita9157ce950dfe2fc30795d43b9d79b9d1bffc48b (patch)
tree9df484304b560466d145e662c1c254ff0e9ae0ba /static/openbsd/man3/copysign.3
parent160aa82b2d39c46ad33723d7d909cb4972efbb03 (diff)
docs: Added All OpenBSD Manuals
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+.\" $OpenBSD: copysign.3,v 1.5 2025/06/07 10:33:06 schwarze Exp $
+.\" Copyright (c) 1985, 1991 Regents of the University of California.
+.\" 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.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+.\"
+.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
+.\"
+.Dd $Mdocdate: June 7 2025 $
+.Dt COPYSIGN 3
+.Os
+.Sh NAME
+.Nm copysign ,
+.Nm copysignf ,
+.Nm copysignl
+.Nd copy sign
+.Sh SYNOPSIS
+.Lb libm
+.In math.h
+.Ft double
+.Fn copysign "double x" "double y"
+.Ft float
+.Fn copysignf "float x" "float y"
+.Ft long double
+.Fn copysignl "long double x" "long double y"
+.Sh DESCRIPTION
+.Fn copysign
+returns
+.Fa x
+with its sign changed to
+.Fa y Ns 's.
+The
+.Fn copysignf
+function is a single precision version of
+.Fn copysign .
+The
+.Fn copysignl
+function is an extended precision version of
+.Fn copysign .
+.Sh SEE ALSO
+.Xr fabs 3
+.Sh STANDARDS
+.St -ieee754
+.Sh HISTORY
+The
+.Nm copysign ,
+.Nm copysignf
+and
+.Nm copysignl
+functions appeared in
+.Bx 4.3 ,
+.Nx 1.1
+and
+.Ox 4.5 ,
+respectively.