std.math.pow

[Saaa]

?
main.d(118): function std.math.pow called with argument types:
 (double,uint)
matches both:
 std.math.pow(real,uint)
and:
 std.math.pow(real,real)

Also, I use pow(x,2U). Is this the correct function to use or is there a 
dedicated x*x function?