array1d.cu

#include <cusp/array1d.h>
#include <cusp/blas/blas.h>
#include <cusp/copy.h>
#include <cusp/print.h>

// This example shows how to create views to an array container.
// Views act like containers but do not own the underlying data.
// Like pointers, views are *lightweight* objects that *reference* data.

int main(void)
{
    // define array container type
    typedef cusp::array1d<int, cusp::device_memory> Array;

    // define array view type
    typedef Array::view View;

    // allocate array1d container with 10 elements
    Array array(10,0);

    // create view to the first 5 elements of the array
    View first_half(array.begin(), array.begin() + 5);

    // create view to the last 5 elements of the array
    View last_half(array.begin() + 5, array.end());

    // fill the first half of the array with 1s
    cusp::blas::fill(first_half, 1);

    // fill the first half of the array with 2s
    cusp::blas::fill(last_half,  2);

    // print the array
    cusp::print(array);

    // copy the first half to the last half
    cusp::copy(first_half, last_half);

    // print the array
    cusp::print(array);

    return 0;
}