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# Evaluate an equation over an array of datapoints
function evalTreeArray(tree::Node)::Union{Array{Float32, 1}, Nothing}
return evalTreeArray(tree, X)
end
# Evaluate an equation over an array of datapoints
function evalTreeArray(tree::Node, cX::Array{Float32, 2})::Union{Array{Float32, 1}, Nothing}
clen = size(cX)[1]
if tree.degree == 0
if tree.constant
return fill(tree.val, clen)
else
return copy(cX[:, tree.val])
end
elseif tree.degree == 1
cumulator = evalTreeArray(tree.l, cX)
if cumulator === nothing
return nothing
end
op_idx = tree.op
UNAOP!(cumulator, op_idx, clen)
@inbounds for i=1:clen
if isinf(cumulator[i]) || isnan(cumulator[i])
return nothing
end
end
return cumulator
else
cumulator = evalTreeArray(tree.l, cX)
if cumulator === nothing
return nothing
end
array2 = evalTreeArray(tree.r, cX)
if array2 === nothing
return nothing
end
op_idx = tree.op
BINOP!(cumulator, array2, op_idx, clen)
@inbounds for i=1:clen
if isinf(cumulator[i]) || isnan(cumulator[i])
return nothing
end
end
return cumulator
end
end
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