felix felixrehren
felixrehren
/ cumul.jl
Created
April 22, 2018 09:39
multidimensional accumulation-decumulation for + and *
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| argtail(x, rest...) = rest | |
| tail(x::Tuple) = argtail(x...) | |
| # cumul.jl | |
| inverse(::typeof(+),x::T) where {T} = -x | |
| inverse(::typeof(*),x::T) where {T} = 1/x | |
| accum(op,A) = accum!(op,zero(A),A) | |
| accum!(op, B, A) = accum!(op,B,A,1:ndims(A)) |