File: sci_pow2.sci

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scilab 2.6-4
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function [stk,txt,top]=sci_pow2()
// Copyright INRIA
txt=[]
if rhs==1 then
  s1=stk(top)(1)
  if stk(top)(2)=='2'|stk(top)(2)=='3'|part(stk(top)(1),1)=='-' then 
    s1='('+s1+')',
  end
  stk=list('2.^'+s1,'2',stk(top)(3),stk(top)(4),'1')
else
  f=stk(top)(2);e=stk(top-1)(2);s1=stk(top-1)(1)
  if f=='2'|f=='3' then stk(top)(1)='('+stk(top)(1)+')',end
  if e=='2'|e=='3'|part(stk(top-1)(1),1)=='-' then 
    s1='('+s1+')',
  end
  stk=list(s1+'.* 2 .^'+stk(top-1)(1),'?','?','1')
end