No it’s completely loony. Note that even the devices he claims to work with for medical devices are off the shelf ARM processors (ie what everybody uses). No commonly used commodity processors for embedded have used 1’s complement in the last 50 years.
> equipment uses 1s compliment because its cheaper (in terms of silicon)
Yeah that makes no sense. If you need an ALU at all, 2s complement requires no more silicon and is simpler to work with. That’s why it was recommended by von Neumann in 1945. 1s complement is only simpler if you don’t have an adder of any kind, which is then not a CPU, certainly not a C/C++ target.
Even the shittiest low end PIC microcontroller from the 70s uses 2s complement.
It is possible that a sensing device with no microprocessor or computation of any kind (ie a bare ADC) may generate values in sign-mag or 1s complement (and it’s usually the former, again how stupid this is) - but this has nothing to do with the C implementation of whatever host connects to it which is certainly 2s. I guarantee you no embedded processor this dude ever worked with in the medical industry used anything other than 2s complement - you would have always needed to do a conversion.
This truly is one of the most absurd issues to get wrapped up on. It might be dementia, sadly.
https://github.com/RolandHughes/ls-cs/blob/master/README.md
Maintaining a fork of a large C++ framework (well of another obscure fork) where the top most selling point is a fixation on avoiding C++20 all because they dropped support for integer representations that have no extant hardware with recent C++ compilers - and any theoretical hardware wouldn’t run this framework anyway, that doesn’t seem well attached to reality.