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function nerv.Matrix:__tostring__()
local ncol = self:ncol()
local nrow = self:nrow()
local strt = {}
local fmt
if self.fmt then
fmt = self.fmt
else
fmt = "%.8f "
end
if nrow == 1 then
for col = 0, ncol - 1 do
table.insert(strt, string.format(fmt, self[col]))
end
table.insert(strt, "\n")
else
for row = 0, nrow - 1 do
local rp = self[row]
for col = 0, ncol - 1 do
table.insert(strt, string.format(fmt, rp[col]))
end
table.insert(strt, "\n")
end
end
table.insert(strt, string.format(
"[%s %d x %d]", self.__typename, nrow, ncol))
return table.concat(strt)
end
-- gen: a function takes take indices of the matrix and return the generated
-- all entrys in the matrix will be assigned by calling gen(i, j)
function nerv.Matrix:generate(gen)
if (self:nrow() == 1) then
for j = 0, self:ncol() - 1 do
self[j] = gen(j)
end
else
for i = 0, self:nrow() - 1 do
local row = self[i]
for j = 0, self:ncol() - 1 do
row[j] = gen(i, j)
end
end
end
end
nerv.MMatrixInt.fmt = "%d "
function nerv.CuMatrix:__add__(b)
c = self:create()
c:add(self, b, 1.0, 1.0)
return c
end
function nerv.CuMatrix:__sub__(b)
c = self:create()
c:add(self, b, 1.0, -1.0)
return c
end
function nerv.CuMatrix:__mul__(b)
c = nerv.get_type(self.__typename)(self:nrow(), b:ncol())
c:mul(self, b, 1.0, 0.0, 'N', 'N')
return c
end
function nerv.CuMatrixFloat.new_from_host(mat)
local res = nerv.CuMatrixFloat(mat:nrow(), mat:ncol())
res:copy_fromh(mat)
return res
end
function nerv.CuMatrixFloat:new_to_host()
local res = nerv.MMatrixFloat(self:nrow(), self:ncol())
self:copy_toh(res)
return res
end
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