Bugfix | |
* In the bignum module, operations of the form (-A) - (+A) or (-A) - (-A) | |
with A > 0 created an unintended representation of the value 0 which was | |
not processed correctly by some bignum operations. Fix this. This had no | |
consequence on cryptography code, but might affect applications that call | |
bignum directly and use negative numbers. |