Class expression_reduce¶

`class` expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn> base ¶

template <typename Tout, index_t Dims, typename Twork, typename Tin, typename ReduceFn, typename TransformFn,
          typename FinalFn>
struct expression_reduce : public expression_traits_defaults { … }

Expression that reduces an input expression to a single value.

Template parameters
Tout	Return type after the finalizer.
Dims	Dimensionality of the input expression.
Twork	Working type used for the accumulator.
Tin	Input element type.
ReduceFn	Binary reduction functor.
TransformFn	Unary transform applied to each input element before reduction.
FinalFn	Finalizer applied to the accumulated value.

`typedef` value_type ¶

using value_type             = Tin

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::value_type

Declared at base/reduce.hpp:110

`variable` dims ¶

constexpr static size_t dims = Dims

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::dims

Declared at base/reduce.hpp:111

`function` get_shape(const expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn> &) ¶

constexpr static shape<dims> get_shape(const expression_reduce&) { … }

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::get_shape(const expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn> &)

Declared at base/reduce.hpp:112

`function` get_shape() ¶

constexpr static shape<dims> get_shape() { … }

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::get_shape()

Declared at base/reduce.hpp:113

`variable` width ¶

constexpr static size_t width = vector_width<Tin> * bitness_const(1, 2)

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::width

Declared at base/reduce.hpp:115

`constructor` expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>(ReduceFn, TransformFn, FinalFn) ¶

expression_reduce(ReduceFn reducefn, TransformFn transformfn, FinalFn finalfn)

Constructs the reducer.

Parameters
reducefn	Binary reduction functor.
transformfn	Unary transform applied to each input element.
finalfn	Finalizer applied to the accumulated value.

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>(ReduceFn, TransformFn, FinalFn)

Declared at base/reduce.hpp:123

`function` get() ¶

Returns the reduced value.

Horizontally reduces the internal accumulator vector and applies the finalizer.

Returns
	The final reduced value.

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::get()

Declared at base/reduce.hpp:135

`function` set_elements(expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn> &, shape<Dims>, axis_params<VecAxis, N>, const std::type_identity_t<vec<Tin, N>> &) ¶

template <size_t N, index_t VecAxis>
friend KFR_INTRINSIC void set_elements(expression_reduce& self, shape<Dims>, axis_params<VecAxis, N>,
                                       const std::type_identity_t<vec<Tin, N>>& x)

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::set_elements(expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn> &, shape<Dims>, axis_params<VecAxis, N>, const std::type_identity_t<vec<Tin, N>> &)

Declared at base/reduce.hpp:141

`function` reset() ¶

void reset()

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::reset()

Declared at base/reduce.hpp:149

`function` process(const vec<Tin, width> &) ¶

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::process(const vec<Tin, width> &)

Declared at base/reduce.hpp:150

`function` process(const vec<Tin, N> &) ¶

template <size_t N>
    requires(N > width)
KFR_MEM_INTRINSIC void process(const vec<Tin, N>& x) const

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::process(const vec<Tin, N> &)

Declared at base/reduce.hpp:164

`variable` counter ¶

mutable size_t counter

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::counter

Declared at base/reduce.hpp:170

`variable` reducefn ¶

ReduceFn reducefn

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::reducefn

Declared at base/reduce.hpp:171

`variable` transformfn ¶

TransformFn transformfn

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::transformfn

Declared at base/reduce.hpp:172

`variable` finalfn ¶

FinalFn finalfn

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::finalfn

Declared at base/reduce.hpp:173

`variable` value ¶

mutable vec<Twork, width> value

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>::value

Declared at base/reduce.hpp:174

Fully qualified name: kfr::expression_reduce<Tout, Dims, Twork, Tin, ReduceFn, TransformFn, FinalFn>

Declared at base/reduce.hpp:108

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Class expression_reduce¶