Comparing two integers in âincorrect type in comparisonâ according to GP.

["Ewan Delanoy" <ewan.delanoy@gmx.fr>]

Hello all,
 
 
 can anyone explain how to fix the code below. If I understood correctly, what happens that although
 
I know that the polcoeffâs I compute are integers on the examples I chose, the interpreter does not
 
and complains just because they *might* be non-integers. Should I use some kind of âconversion to intâ?
 
 
  Thanks in advance for any kind of help,
 
 
Ewan
 
 
aa_array=['a1,'a2,'a3]
 
 
decompose(expr)={
 
  local(positive_part,negative_part,k,pair);
 
  temp=vector(2,k,[k,polcoeff(expr,1,aa_array[k])]);
 
  positive_part=[];
 
  negative_part=[];
 
  for(k=1,3,\
 
   pair=temp[k];\
 
   if(pair[2]>0,positive_part=concat(positive_part,[pair]););\
 
   if(pair[2]<0,negative_part=concat(negative_part,[pair]););\
 
  );
 
  return([positive_part,negative_part])
 
}
 
 
example_test=decompose(a1)