MATLAB Function Reference |
Base 2 power and scale floating-point numbers
Syntax
Description
X = pow2(Y)
returns an array X
whose elements are 2 raised to the power Y
.
X = pow2(F,E)
computes for corresponding elements of F
and E
. The result is computed quickly by simply adding E
to the floating-point exponent of F
. Arguments F
and E
are real and integer arrays, respectively.
Remarks
This function corresponds to the ANSI C function ldexp()
and the IEEE floating-point standard function scalbn()
.
Examples
For IEEE arithmetic, the statement X
=
pow2(F,E)
yields the values:
See Also
log2
, exp
, hex2num
, realmax
, realmin
The arithmetic operators ^
and .^
polyvalm | power |
© 1994-2005 The MathWorks, Inc.