Using Basetypes to Construct Other Types

SKaMPI  defines several `type constructors' to define nested types out of a user-defined basetype. These constructors are selected by a number. Since working with user-defined types requires a certain acquaintance with the appropriate MPI functions, we describe the different constructors in documenting their code.

The used constants are given below:

Constant	Value	Comment
params.blocks	10
params.blocksize	7
params.vectorstride	11	must be $>=$ params.blocksize