public IAccumulator Multiply(IValueStructure operand)
{
object other;
if (ValueConverter <T> .TryConvertLosslessFrom(operand, out other))
{
_value = _value.Multiply((T)other);
return(this);
}
else
{
IAccumulator acc = Escalate(operand.TypeId, _value, false);
return(acc.Multiply(operand));
}
}
public static bool SimplifyFactors(ISignalSet signals)
{
bool changed = CollectFactors(signals);
if (signals.Count < 2)
{
return(changed);
}
IAccumulator acc = null;
for (int i = signals.Count - 1; i > 0; i--) //don't touch first item!
{
Signal s = signals[i];
if (Std.IsConstantComplex(s))
{
if (acc == null)
{
acc = Accumulator <IntegerValue, RationalValue> .Create(IntegerValue.MultiplicativeIdentity);
}
signals.RemoveAt(i);
changed = true;
if (Std.IsConstantAdditiveIdentity(s))
{
signals.Clear();
signals.Add(UndefinedSymbol.Constant);
return(true);
}
acc = acc.Multiply(s.Value);
}
}
if (acc != null && !acc.Value.Equals(IntegerValue.MultiplicativeIdentity))
{
Signal first = signals[0];
if (Std.IsConstantComplex(first))
{
acc = acc.Divide(first.Value).Invert();
signals[0] = Std.DefineConstant(acc.Value);
changed = true;
}
else
{
signals.Insert(1, Std.DefineConstant(acc.Value));
}
}
return(changed);
}
public static bool SimplifyFactors(ISignalSet signals)
{
bool changed = CollectFactors(signals);
if (signals.Count < 2)
{
return(changed);
}
IAccumulator acc = null;
for (int i = signals.Count - 1; i >= 0; i--)
{
Signal s = signals[i];
if (Std.IsConstantComplex(s))
{
if (Std.IsAdditiveIdentity(s))
{
signals.Clear();
signals.Add(s);
return(true);
}
if (acc == null)
{
acc = Accumulator <IntegerValue, RationalValue> .Create(IntegerValue.MultiplicativeIdentity);
}
signals.RemoveAt(i);
changed = true;
acc = acc.Multiply(s.Value);
}
}
if (acc != null && !acc.Value.Equals(IntegerValue.MultiplicativeIdentity))
{
signals.Insert(0, Std.DefineConstant(acc.Value));
}
return(changed);
}
