function to tree conversion
t=macr2tree(function_name)
:function_name a Scilab macro : :t a Scilab “tree” :
This primitive converts a compiled Scilab function function_name into a tree (nested tlists) which codes the internal representation of the function. For use with tree2code.
tree=macr2tree(`cosh`_);
txt=`tree2code`_(tree,%T);
`write`_(%io(2),txt,'(a)');