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function [tree]=sci_isa(tree)
// Copyright INRIA
// M2SCI function
// Conversion function for Matlab isa()
// Input: tree = Matlab funcall tree
// Ouput: tree = Scilab equivalent for tree
// V.C.
[OBJ,class] = getrhs(tree)
if typeof(class)=="cste" then
typetree=Funcall("type",1,Rhs(OBJ),list())
typeoftree=Funcall("typeof",1,Rhs(OBJ),list())
select class.value
case "logical"
tree=Operation("==",list(typetree,Cste(4)),tree.lhs)
case "char"
tree=Operation("==",list(typetree,Cste(10)),tree.lhs)
case "numeric"
catop=Operation("rc",list(Cste(1),Cste(5)),list())
catop=Operation("rc",list(catop,Cste(8)),list())
eqtree=Operation("==",list(typetree,catop),list())
tree=Funcall("or",1,list(eqtree),list(tree.lhs(1)))
tree.lhs(1).dims=list(1,1)
tree.lhs(1).type=Type(Boolean,Real)
return
case "int8"
tree=Operation("==",list(typeoftree,Cste("int8")),tree.lhs)
case "uint8"
tree=Operation("==",list(typeoftree,Cste("uint8")),tree.lhs)
case "int16"
tree=Operation("==",list(typeoftree,Cste("int16")),tree.lhs)
case "uint16"
tree=Operation("==",list(typeoftree,Cste("uint16")),tree.lhs)
case "int32"
tree=Operation("==",list(typeoftree,Cste("int32")),tree.lhs)
case "uint32"
tree=Operation("==",list(typeoftree,Cste("uint32")),tree.lhs)
case "single"
tree=Operation("==",list(typetree,Cste(1)),tree.lhs)
case "double"
tree=Operation("==",list(typetree,Cste(1)),tree.lhs)
case "cell"
tree=Operation("==",list(typeoftree,Cste("ce")),tree.lhs)
case "struct"
tree=Operation("==",list(typeoftree,Cste("st")),tree.lhs)
case "function_handle"
tree=Operation("==",list(typetree,Cste(13)),tree.lhs)
case "sparse"
tree=Operation("==",list(typetree,Cste(5)),tree.lhs)
case "lti"
tree=Operation("==",list(typeoftree,Cste("state-space")),tree.lhs)
else
set_infos("Unhandled class: "+class.value,2)
tree.lhs(1).dims=list(1,1)
tree.lhs(1).type=Type(Boolean,Real)
return
end
tree.out(1).dims=list(1,1)
tree.out(1).type=Type(Boolean,Real)
else
tree.name="mtlb_isa"
tree.lhs(1).dims=list(1,1)
tree.lhs(1).type=Type(Boolean,Real)
end
endfunction
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