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Author SHA1 Message Date
Simon Forman f0b6f4036a BitInt start; unittest. 2022-10-04 11:20:14 -07:00
Simon Forman 53bea5f59b That was easy... 
but it breaks associativity or is it commutivity?

Anyway you can't add THREE or more things in one expression (yet)
because adding OberonInt objects returns a two-tuple.

I could adjust the semantics of ObInt to accept such two-tuples and do
add_with_carry() but that's probably more trouble than it's worth.

Just gotta be careful with math expressions, eh?
 2022-10-04 08:53:32 -07:00
Simon Forman 690f157ac8 Switch to double-underscore method names. 
Worry about type conversions later.
 2022-10-04 08:49:40 -07:00
Simon Forman e2f107d1bb Subtraction. 2022-10-04 08:47:39 -07:00
Simon Forman 6ecf681d3a BigInts in terms of Oberon Ints 
Oberon RISC has Two's Complement 32-bit ints with carry.

So far so good.
 2022-10-04 08:32:04 -07:00