Scheme::exp2piAndEqual

[gamma-2017]

Why does Scheme::exp2piAndEqual not use logp=cipher.logp ?

[gamma-2017]

In void Scheme::evalExpAndEqual, I replaced the line

	reScaleByAndEqual(c2, logT + 1); // c2 bitDown: logT + 1

with

	divByPo2AndEqual(c2, logT + 1); // c2 bitDown: logT + 1 // MN: Modified

Then Scheme::exp2piAndEqual is not called with logp != cipher.logp in case logSlots=logNh.

Is that a bug?

[KyoohyungHan]

First, exp2piAndEqual function is used in "bootstrapping" process.
And during bootstrapping scaling factor is change temporary, so we do not use logp = cipher.logp.

About the second question, divByPo2AndEqual and reScaleByAndEqual are different algorithms.
For example, divByPo2AndEqual does not change cipher.logp but reScaleByAndEqual changes it.