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tests/src/temporal/: improve examples

--- a/tests/src/temporal/test-a_weighting.c

+++ b/tests/src/temporal/test-a_weighting.c

@@ -1,6 +1,7 @@

 #include <aubio.h>

-int main(){

+int main ()

+{

   aubio_filter_t * f;

--- a/tests/src/temporal/test-biquad.c

+++ b/tests/src/temporal/test-biquad.c

@@ -1,6 +1,7 @@

 #include <aubio.h>

-int main () {

+int main ()

+{

   uint_t win_s = 64; // window size

   // create biquad filter with `b0`, `b1`, `b2`, `a1`, `a2`

--- a/tests/src/temporal/test-c_weighting.c

+++ b/tests/src/temporal/test-c_weighting.c

@@ -1,7 +1,7 @@

 #include <aubio.h>

-int main(){

-  

+int main ()

+{

   aubio_filter_t * f;

   uint_t rates[] = { 8000, 16000, 22050, 44100, 96000, 192000};

--- a/tests/src/temporal/test-filter.c

+++ b/tests/src/temporal/test-filter.c

@@ -1,14 +1,11 @@

 #include <aubio.h>

-int

-main (void)

+int main ()

 {

-  /* allocate some memory */

-  uint_t win_s = 32;            /* window size */

-  fvec_t *in = new_fvec (win_s);      /* input buffer */

-  fvec_t *out = new_fvec (win_s);     /* input buffer */

+  uint_t win_s = 32; // window size

+  fvec_t *in = new_fvec (win_s); // input buffer

+  fvec_t *out = new_fvec (win_s); // input buffer

-

   aubio_filter_t *o = new_aubio_filter_c_weighting (44100);

   in->data[12] = 0.5;

   fvec_print (in);

@@ -16,22 +13,21 @@

   fvec_print (in);

   del_aubio_filter (o);

-  o = new_aubio_filter_c_weighting (44100);

+  o = new_aubio_filter_a_weighting (32000);

   in->data[12] = 0.5;

   fvec_print (in);

   aubio_filter_do_outplace (o, in, out);

   fvec_print (out);

-  del_aubio_filter (o);

-  o = new_aubio_filter_c_weighting (44100);

+  aubio_filter_set_a_weighting (o, 32000);

   in->data[12] = 0.5;

   fvec_print (in);

   aubio_filter_do_filtfilt (o, in, out);

   fvec_print (out);

-  del_aubio_filter (o);

   del_fvec (in);

   del_fvec (out);

+  del_aubio_filter (o);

   aubio_cleanup ();

   return 0;

--- a/tests/src/temporal/test-resampler.c

+++ b/tests/src/temporal/test-resampler.c

@@ -1,14 +1,11 @@

-#include <stdio.h>

 #include <aubio.h>

-int

-main ()

+int main ()

 {

-  /* allocate some memory */

-  uint_t win_s = 1024;          /* window size */

+  uint_t win_s = 1024; // window size

   smpl_t ratio = 0.5;

-  fvec_t *in = new_fvec (win_s);      /* input buffer */

-  fvec_t *out = new_fvec ((uint_t) (win_s * ratio));  /* input buffer */

+  fvec_t *in = new_fvec (win_s); // input buffer

+  fvec_t *out = new_fvec ((uint_t) (win_s * ratio)); // output buffer

   aubio_resampler_t *o = new_aubio_resampler (0.5, 0);

   uint_t i = 0;