corrected issues with variable definition and usage of copy function. (linalg)

src/juobs_linalg.jl

@@ -60,8 +60,8 @@ function get_matrix(corr_diag::Vector{Vector{uwreal}}, corr_upper::Vector{Vector
         return nothing
     end
     res = Vector{Matrix}(undef, time) # array with all the matrices at each time step.
+    aux = Matrix{uwreal}(undef, n, n)
     for t in 1:time  
-        aux = Matrix{uwreal}(undef, n, n)
         count=0
         #testing = corr_upper[1][1]
         for i in range(n-1,1, step=-1)
@@ -73,7 +73,7 @@ function get_matrix(corr_diag::Vector{Vector{uwreal}}, corr_upper::Vector{Vector
             aux[i,i] = corr_diag[i][t]
         end
         aux[n,n] = corr_diag[n][t]
-        res[t] = aux
+        res[t] = copy(aux)
     end
     return res
 end
@@ -89,15 +89,15 @@ function energies(evals::Vector{Vector{uwreal}})
     time = length(evals) 
     n = length(evals[1])
     eff_en = Vector{Vector}(undef, n)
-    #aux_en = Vector{uwreal}(undef, time-1)
+    aux_en = Vector{uwreal}(undef, time-1)
     for i in 1:n
-        aux_en = Vector{uwreal}(undef, time-1)
+        #aux_en = Vector{uwreal}(undef, time-1)
         for t in 1:time-1
             ratio = evals[t][i] / evals[t+1][i]
             aux_en[t] = log(sqrt(ratio * ratio))
         end
         uwerr.(aux_en)
-        eff_en[i] = aux_en
+        eff_en[i] = copy(aux_en)
     end
     return eff_en
 end