/*

• The pIntClass represents multiprecision integers as normalized std::vector<int> of digits 
  

• in the range [-999.999.999....999.999.999]. 
  

• This leaves a 1 bit headroom in both ends, which makes for convenient add/subtract 
  

• operations, e.g. no need for looking at sizes of operands and such.
  

• A pIntClass number is normalized if
  

•  value.size() == 0        -> meaning the number has the value 0
  

•  all non-zero entries in value have the same sign and are in the open
  

•            interval ] -1000000000,...., 1000000000[
  

•  and the most significant (last) digit is non-zero.
  

•  that means that the sign of a non-zero pIntClass number is the sign of the
  

•      value.back(), the last non-zero entry).
  

•  Addition and Subtraction may temporarily make a value not normalized,
  

•  normalize() will bring it back in order.
  

*/ it compiles in a Visual Studio 2022 x64 Console App project, define OS_WINDOWS and _CRT_SECURE_NO_WARNINGS for the entire project, compile for 'release' for speed.

it compiles and run in WSL/Ubuntu with the attached makefile, the MRtest (in pint.cpp) is killed after 300-400 iterations, I suspect a leak, but otherwise it appears to work OK

ADDED: Looks like I have found most of the leaks, it now runs the full test to end without being killed...