Operator* Substraction::Simplified(
Context* nctx,
TypeCorrespondanceTable& table )
{
Operator* sf = mySubOps[0]->Simplified(nctx, table);
Operator* ss = mySubOps[1]->Simplified(nctx, table);
if( sf->IsConstant() && ss->IsConstant() )
{
Constant* csf = reinterpret_cast<Constant*>(sf);
Constant* css = reinterpret_cast<Constant*>(ss);
double v = csf->GetValue() - css->GetValue();
return new Constant( nctx, v );
}
else if( sf->IsNull() )
return new Negate( nctx, ss );
else if( ss->IsNull() )
return sf;
else
return new Substraction( nctx, sf, ss );
}
Operator* Power::Simplified(
Context* nctx,
TypeCorrespondanceTable& table )
{
Operator* sf = mySubOps[0]->Simplified(nctx, table);
Operator* ss = mySubOps[1]->Simplified(nctx, table);
if( sf->IsConstant() && ss->IsConstant() )
{
Constant* csf = reinterpret_cast<Constant*>(sf);
Constant* css = reinterpret_cast<Constant*>(ss);
return new Constant( nctx, std::pow(csf->GetValue(), css->GetValue() ) );
}
else if( ss->IsNull() )
return new Constant( nctx, 1.0 );
else if( ss->IsOne() )
return sf;
else
return new Power( nctx, sf, ss );
}
Operator* Division::Simplified(
Context* nctx,
TypeCorrespondanceTable& table )
{
Operator* fp = mySubOps[0]->Simplified(nctx, table);
Operator* fs = mySubOps[1]->Simplified(nctx, table);
if( fp->IsNull() )
return new Constant( nctx, 0.0, table[GetType()] );
else if( fp->IsOne() )
return new Inverse( nctx, fs );
else if( fp->IsConstant() && fs->IsConstant() )
{
Constant* cfp = reinterpret_cast<Constant*>(fp);
Constant* cfs = reinterpret_cast<Constant*>(fs);
return new Constant( nctx, cfp->GetValue() / cfs->GetValue(), table[GetType()] );
}
else
return new Division( nctx, fp, fs );
}