ali hagigat <hagigatali@xxxxxxxxx> writes: > "-flax-vector-conversions > Allow implicit conversions between vectors with differing numbers of elements > and/or incompatible element types. " > Please mention an example. What is the story of vectors? and > incompatible element types? Vectors are described at http://gcc.gnu.org/onlinedocs/gcc/Vector-Extensions.html . As that says, "it is possible to cast from one vector type to another, provided they are of the same size." If you use -flax-vector-conversions, then these conversions are permitted without an explicit cast. Ian