mirror of https://github.com/n-hys/msun.git
92 lines
2.6 KiB
Groff
92 lines
2.6 KiB
Groff
.\" 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
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd March 4, 2005
|
|
.Dt SCALBN 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm scalbln ,
|
|
.Nm scalblnf ,
|
|
.Nm scalblnl ,
|
|
.Nm scalbn ,
|
|
.Nm scalbnf ,
|
|
.Nm scalbnl
|
|
.Nd adjust exponent
|
|
.Sh LIBRARY
|
|
.Lb libm
|
|
.Sh SYNOPSIS
|
|
.In math.h
|
|
.Ft double
|
|
.Fn scalbln "double x" "long n"
|
|
.Ft float
|
|
.Fn scalblnf "float x" "long n"
|
|
.Ft long double
|
|
.Fn scalblnl "long double x" "long n"
|
|
.Ft double
|
|
.Fn scalbn "double x" "int n"
|
|
.Ft float
|
|
.Fn scalbnf "float x" "int n"
|
|
.Ft long double
|
|
.Fn scalbnl "long double x" "int n"
|
|
.Sh DESCRIPTION
|
|
These routines return
|
|
.Fa x Ns \(**(2** Ns Fa n )
|
|
computed by exponent manipulation.
|
|
.Sh SEE ALSO
|
|
.Xr ieee 3 ,
|
|
.Xr math 3
|
|
.Sh STANDARDS
|
|
These routines conform to
|
|
.St -isoC-99 ,
|
|
and they implement the Scalb function recommended by
|
|
.St -ieee754 .
|
|
.Sh HISTORY
|
|
The
|
|
.Fn scalbn
|
|
and
|
|
.Fn scalbnf
|
|
functions appeared in
|
|
.Bx 4.3
|
|
and
|
|
.Fx 2.0 ,
|
|
respectively.
|
|
The
|
|
.Fn scalbln
|
|
and
|
|
.Fn scalblnf
|
|
functions first appeared in
|
|
.Fx 5.3 ,
|
|
and
|
|
.Fn scalblnl
|
|
and
|
|
.Fn scalbln
|
|
in
|
|
.Fx 6.0 .
|