Sincos slightly slower than sin and cos

I have some pieces of code that require lots of sin and cos evaluations and I’m looking for ways to accelerate. I noticed that the sincos function seems slightly slower than calling sin and cos alone.

julia> using BenchmarkTools

julia> x = rand(1000);

julia> @btime map(sincos, $x);
  7.725 μs (1 allocation: 15.75 KiB)

julia> @btime map(y->(sin(y),cos(y)), $x);
  6.975 μs (1 allocation: 15.75 KiB)

Is the sincos function just for convenience? Is there a standard way of speeding up trigonometry?

(I just upgraded to Julia 1.7.0)

Oh ok, I didn’t see that :innocent:. Thanks.