AMP-for_each

Functions
template<typename InputIterator , typename UnaryFunction >
InputIterator	bolt::amp::for_each (InputIterator first, InputIterator last, UnaryFunction f)
	ForEach applies the unary function f to each element in the range [first,last] without modifying the input sequence.
template<typename InputIterator , typename UnaryFunction >
InputIterator	bolt::amp::for_each (control &ctl, InputIterator first, InputIterator last, UnaryFunction f)
template<typename InputIterator , typename Size , typename UnaryFunction >
InputIterator	bolt::amp::for_each_n (InputIterator first, Size n, UnaryFunction f)
	ForEach_n applies the unary function f to each element in the range [first,first+n] without modifying the input sequence.
template<typename InputIterator , typename Size , typename UnaryFunction >
InputIterator	bolt::amp::for_each_n (control &ctl, InputIterator first, Size n, UnaryFunction f)

Detailed Description

Function Documentation

template<typename InputIterator , typename UnaryFunction >

InputIterator bolt::amp::for_each	(	InputIterator	first,
		InputIterator	last,
		UnaryFunction	f
	)

ForEach applies the unary function f to each element in the range [first,last] without modifying the input sequence.

Parameters

ctl	Optional Control structure to control accelerator, debug, tuning, etc.See bolt::amp::control.
first	The first element in the range of interest.
last	The last element in the range of interest.
f	Unary Function to apply to elements in the range [first,last].

Template Parameters

InputIterator

is a model of InputIterator is mutable.

The following code snippet demonstrates how to use for_each with a device_vector..

#include <bolt/amp/for_each.h>
#include <bolt/amp/device_vector.h>
#include <stdlib.h>
...
template< typename T >
struct unary_op
{

void operator()( T &x ) const restrict(amp, cpu)
{
     x+=2;

}
};
std::vector<int> sv(10, rand()%10);
bolt::amp::device_vector<int> v(sv.begin(), sv.end());

bolt::amp::for_each(v.begin(), v.end(), unary_op<int>());

// the elements of v are printed.

See Also

http://www.sgi.com/tech/stl/for_each.html

template<typename InputIterator , typename Size , typename UnaryFunction >

InputIterator bolt::amp::for_each_n	(	InputIterator	first,
		Size	n,
		UnaryFunction	f
	)

ForEach_n applies the unary function f to each element in the range [first,first+n] without modifying the input sequence.

Parameters

ctl	Optional Control structure to control accelerator, debug, tuning, etc.See bolt::amp::control.
first	The first element in the range of interest.
n	The size of the range of interest.
f	Unary Function to apply to elements in the range [first,first+n].

Template Parameters

InputIterator

is a model of InputIterator is mutable.

The following code snippet demonstrates how to use for_each_n with a device_vector..

#include <bolt/amp/for_each.h>
#include <bolt/amp/device_vector.h>
#include <stdlib.h>
...
template< typename T >
struct unary_op
{

void operator()( T &x ) const restrict(amp, cpu)
{
   x+=2;

}
};
std::vector<int> sv(10, rand()%10);
bolt::amp::device_vector<float> v(sv.begin(), sv.end());
int n = 5;
bolt::amp::for_each_n(v.begin(), n, unary_op<int>());

// First 5 elements of v are printed.

See Also

http://www.sgi.com/tech/stl/for_each.html