![Nils Larsch](/assets/img/avatar_default.png)
and BN_get_sign - implement BN_set_negative as a function - always use "#define BN_is_zero(a) ((a)->top == 0)"
The stuff in here is based on patches supplied to me by Steven Schoch <schoch@sheba.arc.nasa.gov> to do DSS. I have since modified a them a little but a debt of gratitude is due for doing the initial work.