Incorrect integer returned about nim-nint128 HOT 3 OPEN

In addition, this code:

a = i128("270141183460469231731687303715884105727")

echo(a)

Results in:
99999999999999999999999999999999999999

from nim-nint128.

This code:
a = i128("170141183460469231731687303715884105730")
Results in 2.

However,
a = i128("170141183460469231731687303715884105729")
and
a = i128("170141183460469231731687303715884105728")

Are overflow. Is this intentional?

from nim-nint128.

Thank you for the report.

The current behavior is intentional, as overflow detection is not implemented. It's something I've been studying how to implement in the best possible way.

The current code is as if it were always compiling with -d:danger.

So any number above high(Int128) == 170141183460469231731687303715884105727 you can expect this silent overflow behavior.

from nim-nint128.