thrust::fill_n

Defined in thrust/fill.h

template<typename DerivedPolicy, typename OutputIterator, typename Size, typename T> OutputIterator thrust::fill_n(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, OutputIterator first, Size n, const T &value)

fill_n assigns the value value to every element in the range [first, first+n). That is, for every iterator i in [first, first+n), it performs the assignment *i = value.

The algorithm’s execution is parallelized as determined by exec.

The following code snippet demonstrates how to use fill to set a thrust::device_vector’s elements to a given value using the thrust::device execution policy for parallelization:

#include <thrust/fill.h>
#include <thrust/device_vector.h>
#include <thrust/execution_policy.h>
...
thrust::device_vector<int> v(4);
thrust::fill_n(thrust::device, v.begin(), v.size(), 137);

// v[0] == 137, v[1] == 137, v[2] == 137, v[3] == 137