Functions
template<typename InputIterator , typename UnaryFunction , typename T , typename BinaryFunction >
T	bolt::amp::transform_reduce (InputIterator first, InputIterator last, UnaryFunction transform_op, T init, BinaryFunction reduce_op)
	`transform_reduce` fuses transform and reduce operations together, increasing performance by reducing memory passes.

template<typename InputIterator , typename UnaryFunction , typename T , typename BinaryFunction >
T	bolt::amp::transform_reduce (control &ctl, InputIterator first1, InputIterator last1, UnaryFunction transform_op, T init, BinaryFunction reduce_op)
	`transform_reduce` fuses transform and reduce operations together, increasing performance by reducing memory passes.

Detailed Description

Function Documentation

template<typename InputIterator , typename UnaryFunction , typename T , typename BinaryFunction >

T bolt::amp::transform_reduce	(	InputIterator	first,
		InputIterator	last,
		UnaryFunction	transform_op,
		T	init,
		BinaryFunction	reduce_op
	)

transform_reduce fuses transform and reduce operations together, increasing performance by reducing memory passes.

Logically, a transform operation is performed over the input sequence using the unary function and stored into a temporary sequence; then, a reduction operation is applied using the binary function to return a single value.

Parameters

first	The beginning of the input sequence.
last	The end of the input sequence.
transform_op	A unary tranformation operation.
init	The initial value for the accumulator.
reduce_op	The binary operation used to combine two values. By default, the binary operation is plus<>().

Returns: The result of the combined transform and reduction.

Template Parameters

T	The type of the result.
InputIterator	is a model of an InputIterator. and `InputIterator's` `value_type` is convertible to `BinaryFunction's` `first_argument_type`.
UnaryFunction	is a model of Unary Function. and `UnaryFunction's` `result_type` is convertible to `InputIterator's` `value_type`.
BinaryFunction	is a model of Binary Function. and `BinaryFunction's` `result_type` is convertible to `InputIterator's` `value_type`.

#include <bolt/amp/transform_reduce.h>
#include <bolt/amp/functional.h>
int input[10] = {-5,  0,  2,  3,  2,  4, -2,  1,  2,  3};
int output;
bolt::amp::transform_reduce( input, input + 10, bolt::amp::square<int>(), 0, bolt::amp::plus<int>() );
// output is 76

See Also: http://www.sgi.com/tech/stl/InputIterator.html; http://www.sgi.com/tech/stl/OutputIterator.html; http://www.sgi.com/tech/stl/UnaryFunction.html; http://www.sgi.com/tech/stl/BinaryFunction.html