#include "gmxpre.h"
+#include "correl.h"
+
+#include <math.h>
#include <stdio.h>
#include <stdlib.h>
-#include <math.h>
#include "gromacs/fft/fft.h"
#include "gromacs/utility/smalloc.h"
-#include "correl.h"
#define SWAP(a, b) tempr = (a); (a) = (b); (b) = tempr