cusp::reciprocal_functor< T > Struct Template Reference

Detailed description

template<typename T>
struct cusp::reciprocal_functor< T >

reciprocal_functor is a function object computes the reciprocal, 1/x, of a given element.

Parameters

T	is a model of Assignable, and if x is an object of type T, then x=c must be defined and must have a return type that is convertible to T.

Overview

reciprocal_functor is a function object. Specifically, it is an Adaptable Unary Function. If f(c) is an object of class reciprocal_functor<T>, and x is an object of class T, then f(x) returns 1.0/x.

Example

#include <cusp/array1d.h>
#include <cusp/functional.h>
#include <cusp/print.h>

int main()
{
   // create an array with 5 entries from 1 to 5
   cusp::counting_array<float> count(5, 1);

   // allocate size of transformed output array
   cusp::array1d<float,cusp::host_memory> v(5, 0);

   // compute output vector as transform of tens
   thrust::transform(count.begin(), count.end(), v.begin(), cusp::reciprocal_functor<float>());

   // v = [1, 0.5, 0.33, 0.25, 0.2]
   cusp::print(v);
}

Definition at line 565 of file functional.h.

#include <functional.h>

Inheritance diagram for cusp::reciprocal_functor< T >:

Public Methods
__host__ __device__ T	operator() (const T &v) const