xref: /freebsd/lib/msun/man/scalbn.3 (revision 29bf6af8904f9833bbc9c0e5f2219f785defe550)

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.\"     from: @(#)ieee.3	6.4 (Berkeley) 5/6/91
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.Dd January 26, 2005
.Dt SCALBN 3
.Os
.Sh NAME
.Nm scalbln ,
.Nm scalblnf ,
.Nm scalbn ,
.Nm scalbnf
.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 double
.Fn scalbn "double x" "int n"
.Ft float
.Fn scalbnf "float x" "int n"
.Sh DESCRIPTION
.Fn scalbln ,
.Fn scalblnf ,
.Fn scalbn ,
and
.Fn scalbnf
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 .