thrust::tabulate

Defined in thrust/tabulate.h

template<typename DerivedPolicy, typename ForwardIterator, typename UnaryOperation> void thrust::tabulate(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, ForwardIterator first, ForwardIterator last, UnaryOperation unary_op)

tabulate fills the range [first, last) with the value of a function applied to each element’s index.

For each iterator i in the range [first, last), tabulate performs the assignment *i = unary_op(i - first).

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

The following code snippet demonstrates how to use tabulate to generate the first n non-positive integers using the thrust::host execution policy for parallelization:

#include <thrust/tabulate.h>
#include <thrust/functional.h>
#include <thrust/execution_policy.h>
...
const int N = 10;
int A[N];
thrust::tabulate(thrust::host, A, A + 10, thrust::negate<int>());
// A is now {0, -1, -2, -3, -4, -5, -6, -7, -8, -9}