Hans Åberg <haber...@telia.com> writes: A common programming error is assuming that signed integer types are two’s complement, because even though all current CPUs are that, overflows are undefined in C/C++, and an optimizer can take advantage of that. One example from [1]: checking overflows with x > x + 1 may work as intended with optimization turned off, but when on, the optimizer can assume that it is always false since x + 1 is undefined when overflowed.
I believe we assume signed integers are in two's complement. We don't do a lot of arithmetic on signed integers, though. -- Torbjörn Please encrypt, key id 0xC8601622 _______________________________________________ gmp-bugs mailing list gmp-bugs@gmplib.org https://gmplib.org/mailman/listinfo/gmp-bugs
