@Override
public SimplePolynomialFunction compose(SimplePolynomialFunction inner) {
for (CompoundPolynomialFunction pipeline : pipelines) {
pipeline.composeHeadDirectly(inner);
}
SimplePolynomialFunction newBase;
if (!inner.isParameterized()) {
SimplePolynomialFunction extended =
ParameterizedPolynomialFunctions.extend(inner.getInputLength() << 1, inner);
newBase =
super.compose(
new OptimizedPolynomialFunctionGF2(
inner.getInputLength(),
inner.getOutputLength(),
extended.getMonomials(),
extended.getContributions()));
} else {
newBase = super.compose(inner);
}
return new ParameterizedPolynomialFunctionGF2(
inner.getInputLength(),
outputLength,
newBase.getMonomials(),
newBase.getContributions(),
pipelines);
}
@Override
public boolean equals(Object obj) {
if (obj instanceof SimplePolynomialFunction) {
SimplePolynomialFunction other = (SimplePolynomialFunction) obj;
if (this.getInputLength() != other.getInputLength()) {
return false;
}
for (int i = 0; i < 10000; ++i) {
BitVector input = BitVectors.randomVector(getInputLength());
if (!this.apply(input).equals(other.apply(input))) {
return false;
}
}
}
return true;
}