moving_average.c

#include <stdlib.h>                                                             
#include "moving_average.h"                                                     
                                                                                
movingAverage_t* movingAverage_new(size_t num_samples) {                        
        movingAverage_t *ma = malloc(sizeof(movingAverage_t));                  
        ma->samples = malloc(num_samples * sizeof(double));                     
        ma->oldest_index = 0;                                                   
        ma->num_samples = num_samples;                                          
}                                                                               
                                                                                
void movingAverage_free(movingAverage_t *ma) {                                  
        free(ma->samples);                                                      
        free(ma);                                                               
}                                                                               
                                                                                
void movingAverage_update(movingAverage_t *ma, double new_sample) {             
        ma->average -= ma->samples[ma->oldest_index];                           
        ma->samples[ma->oldest_index] = new_sample;                             
        ma->average += ma->samples[ma->oldest_index];                           
        ma->oldest_index = (ma->oldest_index + 1) % ma->num_samples;            
}