Function assign

extensions/include/cuMat/src/CwiseOp.h:32–35

            matrix.rawCoeff(index) op1 value;                               \
        }                                                                   \
        static __device__ CUMAT_STRONG_INLINE void assign(M& matrix, V value, Index index, std::integral_constant<int, AccessFlags::RWCwise>) /*read-write access*/         \
        {                                                                    \
            matrix.setRawCoeff(index) = matrix.getRawCoeff(index) op2 value;  \
        }                                                                    \
        static __device__ CUMAT_STRONG_INLINE void assign(M& matrix, V value, Index index, std::integral_constant<int, AccessFlags::RWCwiseRef | AccessFlags::RWCwise>) /*both is possible, use reference*/ \
        {                                                                   \
            matrix.rawCoeff(index) op1 value;                               \