RTOpPack: Extra C/C++ Code for Vector Reduction/Transformation Operators Version of the Day
Struct for a mutable sub-vector.
The corresponding entries in the global vector
x(j) (one based) are as follows:
x( vec.global_offset + k ) = vec.values[ vec.value_stride * (k-1) ] for k = 1...vec.sub_dim
The stride member
vec.value_stride may be positive (>0), negative (<0) but not zero (0). A negative stride
vec.value_stride < 0 allows a reverse traversal of the elements in a vector. A zero stride
vec.value_stride == 0 would allow a vector with all the elements the same and therefore is not a target of a transformation operation.