fix typo

Author: qyli

src/Algorithm/Lanczos/LanczosExp.jl

@@ -73,7 +73,7 @@ function LanczosExp(f::Function, x₀, t::NT, args...;
 		rmul!(lsb[k+1], 1 / T[k, k+1])
 
 		# callback function here
-		!isnothing(callback) && callback(x)
+		!isnothing(callback) && callback(lsb[k+1])
 
 		# convergence check 
 		ϵ, V = eigen(T[1:k, 1:k])

src/Algorithm/Lanczos/LanczosGS.jl

@@ -70,7 +70,7 @@ function LanczosGS(f::Function, x₀, args...;
 		rmul!(lsb[k+1], 1 / T[k, k+1])
 
           # callback function here
-          !isnothing(callback) && callback(x)
+          !isnothing(callback) && callback(lsb[k+1])
 
 		# convergence check 
 		ϵ, V = eigen(T[1:k, 1:k])