function [y,iflaw]=fmodany(iflaw,t0);%FMODANY Signal with arbitrary frequency modulation.%	[Y,IFLAW]=FMODANY(IFLAW,T0) generates a frequency modulated%	signal whose instantaneous frequency law is approximately given by%	the vector IFLAW (the integral is approximated by CUMSUM).%	The phase of this modulation is such that y(t0)=1.% %	IFLAW : vector of the instantaneous frequency law samples.%	T0    : time reference		(default: 1).%	Y     : output signal%%	Example:%	 [y1,ifl1]=fmlin(100); [y2,ifl2]=fmsin(100);%	 iflaw=[ifl1;ifl2]; sig=fmodany(iflaw); %	 subplot(211); plot(real(sig))%	 subplot(212); plot(iflaw); %%	See also FMCONST, FMLIN, FMSIN, FMPAR, FMHYP, FMPOWER.%	F. Auger, August 1995.%	Copyright (c) 1996 by CNRS (France).%%	------------------- CONFIDENTIAL PROGRAM -------------------- %	This program can not be used without the authorization of its%	author(s). For any comment or bug report, please send e-mail to %	f.auger@ieee.org [ifrow,ifcol]=size(iflaw);if (ifcol~=1), error('IFLAW must have one column');elseif (max(abs(iflaw))>0.5), error('The elements of IFLAW should not be higher than 0.5');end;if (nargin==1), t0=1;elseif (t0==0)|(t0>ifrow), error('T0 should be between 1 and length(IFLAW)');end;y=exp(j*2.0*pi*cumsum(iflaw));y=y*conj(y(t0));