Split commands into different files

Joseph Redmon

2015-03-06 2313a8eb54d703323279c0fb9b2c9c52d26f0cf9

 src/dropout_layer.c

@@ -1,6 +1,8 @@
#include "dropout_layer.h"
#include "stdlib.h"
#include "stdio.h"
#include "utils.h"
#include "cuda.h"
#include <stdlib.h>
#include <stdio.h>

dropout_layer *make_dropout_layer(int batch, int inputs, float probability)
{
@@ -9,18 +11,48 @@
    layer->probability = probability;
    layer->inputs = inputs;
    layer->batch = batch;
    layer->output = calloc(inputs*batch, sizeof(float));
    layer->rand = calloc(inputs*batch, sizeof(float));
    layer->scale = 1./(1.-probability);
    #ifdef GPU
    layer->output_gpu = cuda_make_array(layer->output, inputs*batch);
    layer->rand_gpu = cuda_make_array(layer->rand, inputs*batch);
    #endif
    return layer;
} 

void resize_dropout_layer(dropout_layer *layer, int inputs)
{
    layer->output = realloc(layer->output, layer->inputs*layer->batch*sizeof(float));
    layer->rand = realloc(layer->rand, layer->inputs*layer->batch*sizeof(float));
    #ifdef GPU
    cuda_free(layer->output_gpu);
    cuda_free(layer->rand_gpu);

    layer->output_gpu = cuda_make_array(layer->output, inputs*layer->batch);
    layer->rand_gpu = cuda_make_array(layer->rand, inputs*layer->batch);
    #endif
}

void forward_dropout_layer(dropout_layer layer, float *input)
{
    int i;
    for(i = 0; i < layer.batch * layer.inputs; ++i){
        if((float)rand()/RAND_MAX < layer.probability) input[i] = 0;
        else input[i] /= (1-layer.probability);
        float r = rand_uniform();
        layer.rand[i] = r;
        if(r < layer.probability) layer.output[i] = 0;
        else layer.output[i] = input[i]*layer.scale;
    }
}
void backward_dropout_layer(dropout_layer layer, float *input, float *delta)

void backward_dropout_layer(dropout_layer layer, float *delta)
{
    // Don't do shit LULZ
    int i;
    if(!delta) return;
    for(i = 0; i < layer.batch * layer.inputs; ++i){
        float r = layer.rand[i];
        if(r < layer.probability) delta[i] = 0;
        else delta[i] *= layer.scale;
    }
}