Implement scalar division

Author: jishnub

src/definitions.jl

@@ -420,6 +420,8 @@ Broadcast.broadcasted(::Base.Broadcast.DefaultArrayStyle{1}, ::typeof(*), f::Fre
     Frequencies(f.n_nonnegative, f.n, f.multiplier * x)
 Broadcast.broadcasted(s::Base.Broadcast.DefaultArrayStyle{1}, ::typeof(*), x::Number, f::Frequencies) =
     Broadcast.broadcasted(s, *, f, x)
+Broadcast.broadcasted(::Base.Broadcast.DefaultArrayStyle{1}, ::typeof(/), f::Frequencies, x::Number) =
+    Frequencies(f.n_nonnegative, f.n, f.multiplier / x)
 
 """
     fftfreq(n, fs=1)

test/runtests.jl

@@ -107,6 +107,9 @@ end
         @test fftfreq(4, 1) .* 2 === fftfreq(4, 2)
         @test 2 * fftfreq(4, 1) === fftfreq(4, 2)
         @test 2 .* fftfreq(4, 1) === fftfreq(4, 2)
+
+        @test fftfreq(4, 1) / 2 === fftfreq(4, 1/2)
+        @test fftfreq(4, 1) ./ 2 === fftfreq(4, 1/2)
     end
 end