Reducer< T, ReducerType::Or > Class Template Reference

Reducer for "or" (operator|). More...

#include <Reducer.hpp>

Inheritance diagram for Reducer< T, ReducerType::Or >:

Public Member Functions
	Super (ReducerImpl< T, collective_or >)
void	operator|= (const T &v)
Public Member Functions inherited from ReducerImpl< T, collective_or >
	ReducerImpl ()
	operator T () const
	Read out value; does expensive global reduce. More...
void	operator= (const T &v)
	Globally set the value; expensive global synchronization. More...
void	reset ()
	Globally reset to default value for the type. More...

Additional Inherited Members
Protected Attributes inherited from ReducerImpl< T, collective_or >
T	local_value

Detailed Description

template<typename T>
class Reducer< T, ReducerType::Or >

Reducer for "or" (operator|).

Useful for "any" checks, such as "are any values non-zero?". Provides cheap operator for "or-ing" something onto the value: |=.

Example:

• ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Reducer<bool,ReducerType::Or> any_nonzero;

  // ... (somewhere in main task) any_nonzero = false; forall(A, N, [](double& A_i){ if (A_i != 0) { any_nonzero |= true } }); LOG(INFO) << ( any_nonzero ? "some" : "no" ) << " nonzeroes.";

• ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Definition at line 343 of file Reducer.hpp.

Member Function Documentation

template<typename T >

void Reducer< T, ReducerType::Or >::operator|= ( const T &  v )

inline

Definition at line 346 of file Reducer.hpp.

template<typename T >

Reducer< T, ReducerType::Or >::Super

(

ReducerImpl< T, collective_or >

)

---

The documentation for this class was generated from the following file:

• Reducer.hpp