| 8 | |
| 9 | |
| 10 | void P2Data::forward(vector<poly_type>& ans,const vector<gf2n_short>& a) const |
| 11 | { |
| 12 | CODE_LOCATION_NO_SCOPE |
| 13 | |
| 14 | int n=gf2n_short::degree(); |
| 15 | |
| 16 | BitVector bv(A.size()); |
| 17 | ans.resize(A.size()); |
| 18 | for (int i=0; i<slots; i++) |
| 19 | { word rep=a[i].get(); |
| 20 | for (int j=0; j<n && rep!=0; j++) |
| 21 | { if ((rep&1)==1) |
| 22 | { int jj=i*n+j; |
| 23 | bv.add(A[jj]); |
| 24 | } |
| 25 | rep>>=1; |
| 26 | } |
| 27 | } |
| 28 | for (size_t i = 0; i < bv.size(); i++) |
| 29 | ans[i] = bv.get_bit(i); |
| 30 | } |
| 31 | |
| 32 | |
| 33 | void P2Data::backward(vector<gf2n_short>& ans,const vector<poly_type>& a) const |