switch to using fills

Author: mileslucas

src/polynomials/ChebyshevT.jl

@@ -155,9 +155,9 @@ function companion(p::ChebyshevT{T}) where T
     d == 1 && return diagm(0 => [-p[0] / p[1]])
     R = eltype(one(T) / one(T))
 
-    scl = vcat(1.0, √0.5 .* ones(R, d - 1))
+    scl = vcat(1.0, fill(R(√0.5), d - 1))
 
-    diag = vcat(√0.5, ones(R, d - 2) ./ 2)
+    diag = vcat(√0.5, fill(R(0.5), d - 2))
     comp = diagm(1 => diag,
                  -1 => diag)
     monics = p.coeffs ./ p.coeffs[end]

test/ChebyshevT.jl

@@ -178,7 +178,7 @@ end
 @testset "z-series" for i in 0:5
     # c to z
     input = vcat(2, ones(i))
-    target = vcat(0.5 .* ones(i), 2, 0.5 .* ones(i))
+    target = vcat(fill(0.5, i), 2, fill(0.5, i))
     zs = Polynomials._c_to_z(input)
     @test zs == target
     c = Polynomials._z_to_c(zs)