This is nextpow2.m in view mode; [Download] [Up]
## Copyright (C) 1995, 1996 Kurt Hornik
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2, or (at your option)
## any later version.
##
## This program is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this file. If not, write to the Free Software Foundation,
## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
## usage: nextpow2 (x)
##
## If x is a scalar, returns the first integer n such that
## 2^n >= abs (x).
##
## If x is a vector, return nextpow2 (length (x)).
## Author: KH <Kurt.Hornik@ci.tuwien.ac.at>
## Created: 7 October 1994
## Adapted-By: jwe
function n = nextpow2 (x)
if (nargin != 1)
usage ("nextpow2 (x)");
endif
if (! (is_scalar (x) || is_vector (x)))
error ("nextpow2: x must be a scalar or a vector");
endif
t = length (x);
if (t > 1)
x = t;
endif
[f, n] = log2 (abs (x));
if (f == 0.5)
n = n - 1;
endif
endfunction
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.