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.\" 30.Dd March 4, 2005 31.Dt SCALBN 3 32.Os 33.Sh NAME 34.Nm scalbln , 35.Nm scalblnf , 36.Nm scalblnl , 37.Nm scalbn , 38.Nm scalbnf , 39.Nm scalbnl 40.Nd adjust exponent 41.Sh LIBRARY 42.Lb libm 43.Sh SYNOPSIS 44.In math.h 45.Ft double 46.Fn scalbln "double x" "long n" 47.Ft float 48.Fn scalblnf "float x" "long n" 49.Ft long double 50.Fn scalblnl "long double x" "long n" 51.Ft double 52.Fn scalbn "double x" "int n" 53.Ft float 54.Fn scalbnf "float x" "int n" 55.Ft long double 56.Fn scalbnl "long double x" "int n" 57.Sh DESCRIPTION 58These routines return 59.Fa x Ns \(**(2** Ns Fa n ) 60computed by exponent manipulation. 61.Sh SEE ALSO 62.Xr ieee 3 , 63.Xr math 3 64.Sh STANDARDS 65These routines conform to 66.St -isoC-99 , 67and they implement the Scalb function recommended by 68.St -ieee754 . 69.Sh HISTORY 70The 71.Fn scalbn 72and 73.Fn scalbnf 74functions appeared in 75.Bx 4.3 76and 77.Fx 2.0 , 78respectively. 79The 80.Fn scalbln 81and 82.Fn scalblnf 83functions first appeared in 84.Fx 5.3 , 85and 86.Fn scalblnl 87and 88.Fn scalbln 89in 90.Fx 6.0 . 91