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restore allocation free maxdiff #1051

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Oct 7, 2023
Merged

restore allocation free maxdiff #1051

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13 changes: 13 additions & 0 deletions src/utilities/maxdiff.jl
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Original file line number Diff line number Diff line change
@@ -1,3 +1,16 @@
# generic version for gpu support
function maxdiff(x::AbstractArray, y::AbstractArray)
return mapreduce((a, b) -> abs(a - b), max, x, y)
end

# allocation free version for normal arrays
function maxdiff(x::Array, y::Array)
res = real(zero(x[1] - y[1]))
@inbounds for i in 1:length(x)
delta = abs(x[i] - y[i])
if delta > res
res = delta
end
end
return res
end
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