Functor

Functor

Introduction

Published in Randall L. Eubank, Ana Kupresanin, Statistical Computing in C++ and R, 2011

One criticism that can be directed at a functor such as the one in Listing 8.2 is that it can encapsulate only one function. For example, a new functor would have to be created to contain the ceiling function ceil that returns the greatest integer that is not smaller than its argument. These two functions are of a very similar nature in the sense that they both take a double argument and return an integer. * It would be nice to have a single functor class/struct that could hold either of these functions or, more generally, any function that takes a double argument and returns an int. One avenue for creating this type of functor object is provided by function pointers.

Parallel algorithms for reducing derivation time of distinguishing experiments for nondeterministic finite state machines

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Journal Information

Published in International Journal of Parallel, Emergent and Distributed Systems, 2018

Khaled El-Fakih, Gerassimos Barlas, Mustafa Ali, Nina Yevtushenko

GPUThrust: Thrust is a C++ template library that works at a higher level that CUDA. All one has to do is describe the operation that needs to be performed as a special function known as a functor (basically a function object). The functor is then applied to all the elements of a container automatically. This is equivalent to having a single GPU thread per ordered pair of states as in the GPUCUDA case.

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Introduction

Parallel algorithms for reducing derivation time of distinguishing experiments for nondeterministic finite state machines