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function [x,y,typ]=ZCROSS_f(job,arg1,arg2)
// Copyright INRIA
x=[];y=[];typ=[];
select job
case 'plot' then
standard_draw(arg1)
case 'getinputs' then
[x,y,typ]=standard_inputs(arg1)
case 'getoutputs' then
[x,y,typ]=standard_outputs(arg1)
case 'getorigin' then
[x,y]=standard_origin(arg1)
case 'set' then
x=arg1;
graphics=arg1(2);label=graphics(4)
model=arg1(3);
while %t do
[ok,in,label]=getvalue(['Set Zero-Crossing parameters';..
'All surfaces must cross together'],..
'Input size',list('vec',1),label)
if ~ok then break,end
in=int(in)
if in<=0 then
message('Block must have at least one input')
else
kk=0
for jj=1:in
kk=kk+2^(in+jj-1)
end
model(8)=[-ones(kk,1);zeros(2^(2*in)-kk,1)]
graphics(4)=label
model(2)=in
model(11)=-1 //compatibility
x(2)=graphics;x(3)=model
break
end
end
case 'define' then
rpar=[-1;-1;0;0]
in=1
model=list('zcross',in,[],[],1,[],[],rpar,[],'z',-1,[%t %f],' ',list())
label=strcat(sci2exp(in))
gr_i=['xstringb(orig(1),orig(2),''Zcross'',sz(1),sz(2),''fill'');']
x=standard_define([2 2],model,label,gr_i)
end
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