cpp/experimental/simd/simd/simd

@1@ Constructs a using  (constructed without initializer) or  (constructed with an empty initializer). @2@ The broadcast constructor constructs a with all values initialized to. . @3@ Constructs a where the i-th element is initialized to. . @4@ The generator constructor constructs a where the i-th element is initialized to. is well-formed. The calls to are unsequenced with respect to each other.  standard library functions may not be invoked by. @5@ The load constructor constructs a where the i-th element is initialized to. @6-7@ Implicitly declared copy and move constructors. Constructs a where each element is initialized from the values of the elements in.