ToProjective method
Implementation
void ToProjective(ProjectiveGroupElement r) {
FeMul(r.X, X, T);
FeMul(r.Y, Y, Z);
FeMul(r.Z, Z, T);
}
void ToProjective(ProjectiveGroupElement r) {
FeMul(r.X, X, T);
FeMul(r.Y, Y, Z);
FeMul(r.Z, Z, T);
}