returnValue Product::AD_backward( int dim,
VariableType *varType,
int *component,
Operator *seed,
Operator **df ){
if( seed->isOneOrZero() != NE_ZERO ){
TreeProjection tmp;
tmp = *seed;
argument1->AD_backward( dim, varType, component,
new Product(
argument2->clone(),
tmp.clone()
),
df );
argument2->AD_backward( dim, varType, component,
new Product(
argument1->clone(),
tmp.clone()
),
df );
}
delete seed;
return SUCCESSFUL_RETURN;
}
returnValue Power::AD_backward( int dim,
VariableType *varType,
int *component,
Operator *seed,
Operator **df ){
if( seed->isOneOrZero() != NE_ZERO ){
TreeProjection tmp;
tmp = *seed;
argument1->AD_backward( dim, varType, component,
new Product(
argument2->clone(),
new Product(
new Power(
argument1->clone(),
new Addition(
argument2->clone(),
new DoubleConstant(-1.0, NE_NEITHER_ONE_NOR_ZERO)
)
),
tmp.clone()
)
),
df );
argument2->AD_backward( dim, varType, component,
new Product(
clone(),
new Product(
tmp.clone(),
new Logarithm(
argument1->clone()
)
)
),
df );
}
delete seed;
return SUCCESSFUL_RETURN;
}
returnValue Subtraction::AD_backward( int dim,
VariableType *varType,
int *component,
Operator *seed,
Operator **df ){
TreeProjection tmp;
tmp = *seed;
argument1->AD_backward( dim, varType, component, tmp.clone(), df );
if( seed->isOneOrZero() != NE_ZERO ){
argument2->AD_backward( dim, varType, component,
new Subtraction( new DoubleConstant( 0.0 , NE_ZERO ), tmp.clone() ), df );
}
delete seed;
return SUCCESSFUL_RETURN;
}
