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function [x,Ht,Fi] =GeneWei(N,ht,l,tmax,randflag)
// This Software is ( Copyright INRIA . 1998 1 )
//
// INRIA holds all the ownership rights on the Software.
// The scientific community is asked to use the SOFTWARE
// in order to test and evaluate it.
//
// INRIA freely grants the right to use modify the Software,
// integrate it in another Software.
// Any use or reproduction of this Software to obtain profit or
// for commercial ends being subject to obtaining the prior express
// authorization of INRIA.
//
// INRIA authorizes any reproduction of this Software.
//
// - in limits defined in clauses 9 and 10 of the Berne
// agreement for the protection of literary and artistic works
// respectively specify in their paragraphs 2 and 3 authorizing
// only the reproduction and quoting of works on the condition
// that :
//
// - "this reproduction does not adversely affect the normal
// exploitation of the work or cause any unjustified prejudice
// to the legitimate interests of the author".
//
// - that the quotations given by way of illustration and/or
// tuition conform to the proper uses and that it mentions
// the source and name of the author if this name features
// in the source",
//
// - under the condition that this file is included with
// any reproduction.
//
// Any commercial use made without obtaining the prior express
// agreement of INRIA would therefore constitute a fraudulent
// imitation.
//
// The Software beeing currently developed, INRIA is assuming no
// liability, and should not be responsible, in any manner or any
// case, for any direct or indirect dammages sustained by the user.
//
// Any user of the software shall notify at INRIA any comments
// concerning the use of the Sofware (e-mail : FracLab@inria.fr)
//
// This file is part of FracLab, a Fractal Analysis Software"
// CHECH INPUT PARAMETERS
[nargout,nargin] = argn() ;
select nargin
case 1
error('At least to input parameters required')
case 2
l = 2 ;
tmax = 1 ;
randflag = 0 ;
case 3
tmax = 1 ;
randflag = 0 ;
case 4
randflag = 0 ;
end
if randflag ~= 0 & randflag ~= 1
error('unknown option for randflag')
end ;
x=zeros(1,N);
kmax = floor(log(N/(2*tmax))/log(l)) ;
oldrnd=rand('info');rand('normal') ;
C = rand(1,kmax) * randflag + ones(1,kmax) * (1-randflag) ;
rand('uniform') ;
A=rand(1,kmax)*2*%pi * randflag ;
if length(ht) == 1
s = 2 - ones(1,N) * ht ;
elseif length(ht) > 1 & length(ht) ~= N
t = linspace(0,tmax,N) ;
s = 2 - eval(ht) ;
elseif length(ht) > 3
s = 2 - ht ;
end
Fi = zeros(1,kmax) ;
// WEIERSTRASS COMPUTATION
for k=1:kmax
y=C(k)*exp(log(l)*(s-2)*k).*(sin(2*%pi*l^k*tmax/N*(0:N-1)+A(k)));
Fi(k) = l^k*tmax/N ;
x(1:N)=x(1:N)+y;
end
Ht = 2-s ;
rand(oldrnd)
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