Built-in Reducers

ReducerConcept provides the concept for Reducers.

Reducer objects used in conjunction with parallel_reduce

Reducer	Description
BAnd	Binary ‘And’ reduction
BOr	Binary ‘Or’ reduction
FirstLoc	Providing the first index satisfying a condition
LAnd	Logical ‘And’ reduction
LastLoc	Providing the last index satisfying a condition
LOr	Logical ‘Or’ reduction
Max	Maximum reduction
MaxFirstLoc	Reduction providing maximum and an associated first index
MaxLoc	Reduction providing maximum and an associated index
Min	Minimum reduction
MinFirstLoc	Reduction providing minimum and an associated first index
MinLoc	Reduction providing minimum and an associated index
MinMax	Reduction providing both minimum and maximum
MinMaxFirstLastLoc	Reduction providing both minimum and maximum and associated first and last indices
MinMaxLoc	Reduction providing both minimum and maximum and associated indices
Prod	Multiplicative reduction
Sum	Sum reduction

reduction_identity defines the neutral elements (identity values) for various reduction operations. Specializing it is crucial for enabling built-in reducers to work with user-defined types.

Reduction Scalar Types are template classes for storage for reducers.