LinearAlgebra/tridiag/elty = Int64/tril/triu @test #= /cache/build/tester-amdci4-8/julialang/julia-master/julia-fb01f9159c/share/julia/stdlib/v1.13/LinearAlgebra/test/tridiag.jl:169 =# @inferred(triu!(copy(SymTridiagonal(d, dl)), 1)) == Tridiagonal(zerosdl, zerosd, dl)