1.\" Copyright (c) 1985, 1991 Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91 29.\" $FreeBSD$ 30.\" 31.Dd March 4, 2005 32.Dt SCALBN 3 33.Os 34.Sh NAME 35.Nm scalbln , 36.Nm scalblnf , 37.Nm scalblnl , 38.Nm scalbn , 39.Nm scalbnf , 40.Nm scalbnl 41.Nd adjust exponent 42.Sh LIBRARY 43.Lb libm 44.Sh SYNOPSIS 45.In math.h 46.Ft double 47.Fn scalbln "double x" "long n" 48.Ft float 49.Fn scalblnf "float x" "long n" 50.Ft long double 51.Fn scalblnl "long double x" "long n" 52.Ft double 53.Fn scalbn "double x" "int n" 54.Ft float 55.Fn scalbnf "float x" "int n" 56.Ft long double 57.Fn scalbnl "long double x" "int n" 58.Sh DESCRIPTION 59These routines return 60.Fa x Ns \(**(2** Ns Fa n ) 61computed by exponent manipulation. 62.Sh SEE ALSO 63.Xr ieee 3 , 64.Xr math 3 65.Sh STANDARDS 66These routines conform to 67.St -isoC-99 , 68and they implement the Scalb function recommended by 69.St -ieee754 . 70.Sh HISTORY 71The 72.Fn scalbn 73and 74.Fn scalbnf 75functions appeared in 76.Bx 4.3 77and 78.Fx 2.0 , 79respectively. 80The 81.Fn scalbln 82and 83.Fn scalblnf 84functions first appeared in 85.Fx 5.3 , 86and 87.Fn scalblnl 88and 89.Fn scalbln 90in 91.Fx 6.0 . 92