cusp::abs_squared_functor< T > Struct Template Reference

Detailed description

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

abs_squared_functor is a function object that computes the square of the absolute value 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

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

Example

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

int main()
{
   // create an array with 5 entries from -2 to 2
   cusp::counting_array<int> count(5, -2);

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

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

   // v = [4, 1, 0, 1, 4]
   cusp::print(v);
}

Definition at line 653 of file functional.h.

#include <functional.h>

Inheritance diagram for cusp::abs_squared_functor< T >:

Public Methods
__host__ __device__ cusp::norm_type< T >::type	operator() (const T &t) const