CudaActivationFunctions.cuh

libcudann

* CudaActivationFunctions.cuh

* Created on: Jan 10, 2011

* Author: donati

#ifndef CUDAACTIVATIONFUNCTIONS_H_

#define CUDAACTIVATIONFUNCTIONS_H_

#define ACT_LINEAR 0

#define ACT_SIGMOID 1

#define ACT_TANH 2

//macro for the span size of the function (for error calculation of backpropagation)

#define spanS(act)(\

act == ACT_TANH ? 2:\

)

//computes the activation function for (number) elements of (neurons) and store the results in (neurons)

void computeActFunct(float * neurons, const int number, const int funct);

//computes the derivation function for (number) elements of (neurons) and multiplies and stores the results with and in (delta)

void computeDerivFunct(float * deltas, const float * neurons, const int number, const int funct);

#endif /* CUDAACTIVATIONFUNCTIONS_H_ */