replace operator, by ctor/expand function to convert between vectors of different size
replace operator, by ctor/expand function to convert between vectors of different size

chr-engwer/Vc,chr-engwer/Vc,VcDevel/Vc,VcDevel/Vc,VcDevel/Vc,VcDevel/Vc,chr-engwer/Vc