Overhaul of C++ part for 64bit compilation and double precision#1

Open

GPS2288 wants to merge 3 commits intoweinkauf:masterfrom GPS2288:master

+98-98

Commits on Apr 26, 2018

Data types converted to double (from real) and size_t (from int)
GPS2288
committed

Commits on Jan 14, 2020

Data types converted to double (from real) and size_t (from int) in examples and tests
GPS2288
committed
Fixed negative value written into size_t
GPS2288
committed