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/***************************************************************************

                          auxiliar.c  -  description

                             -------------------

    begin                : Tue Aug 26 2003

    copyright            : (C) 2003 by Instituto Tecnologico de Informatica (ITI)

    email                : tt2iti@iti.upv.es

 ***************************************************************************/

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <sys/time.h>

#include "auxiliar.h"



/* Check if memory was allocated to pointer ptr */

void memtest(void *ptr)

{

  if (ptr==NULL) {

    fprintf(stderr,"%s: insufficient memory\n",__FILE__);

    exit(EXIT_FAILURE);

  }

}



double elapsed_time(timeval_t *t1, timeval_t *t2){



  long sec;

  long usec;



  sec = (*t2).tv_sec - (*t1).tv_sec;

  if ((*t1).tv_usec <  (*t2).tv_usec)

    usec = (*t2).tv_usec - (*t1).tv_usec;

  else{

    usec = 1000000 - (*t1).tv_usec + (*t2).tv_usec;

    sec--;

  }



  return (double) sec + ((double) usec / 1000000);



}



#ifdef WIN



char* strdup(const char* string){



char* string_copy=NULL;



if(string!=NULL){

  memtest(string_copy=malloc(sizeof(char)*(strlen(string)+1)));

  memcpy(string_copy,string, sizeof(char)*(strlen(string)+1));

}



return string_copy;



}





char* strndup(const char* string, int length){



char* string_copy=NULL;



if(string!=NULL){

  memtest(string_copy=malloc(sizeof(char)*(length+1)));

  memcpy(string_copy,string, sizeof(char)*(length));

  string_copy[length]='\0';

}



return string_copy;



}



#endif