nn/CAddTable.lua at sfc_type · dominikgrewe/nn

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local CAddTable, parent = torch.class('nn.CAddTable', 'nn.Module')

function CAddTable:__init()

parent.__init(self)

self.gradInput = {}

end

function CAddTable:updateOutput(input)

self.output:resizeAs(input[1]):copy(input[1])

for i=2,#input do

self.output:add(input[i])

end

return self.output

end

function CAddTable:updateGradInput(input, gradOutput)

for i=1,#input do

self.gradInput[i] = self.gradInput[i] or input[1].new()

self.gradInput[i]:resizeAs(input[i])

self.gradInput[i]:copy(gradOutput)

end

for i=#input+1, #self.gradInput do

self.gradInput[i] = nil

end

return self.gradInput

end