src/sn_comparator.[ch]: Implement `sn_comparator_shift'.

diff --git a/src/sn_comparator.c b/src/sn_comparator.c
index 052731c..e9753dc 100644 (file)
--- a/src/sn_comparator.c
+++ b/src/sn_comparator.c
@@ -61,6 +61,12 @@ void sn_comparator_invert (sn_comparator_t *c)
   c->max = max;
 } /* void sn_comparator_invert */
 
+void sn_comparator_shift (sn_comparator_t *c, int sw, int inputs_num)
+{
+  c->min = (c->min + sw) % inputs_num;
+  c->max = (c->max + sw) % inputs_num;
+} /* void sn_comparator_shift */
+
 void sn_comparator_swap (sn_comparator_t *c, int con0, int con1)
 {
   if (c->min == con0)

diff --git a/src/sn_comparator.h b/src/sn_comparator.h
index e5bb3dd..a2d34d7 100644 (file)
--- a/src/sn_comparator.h
+++ b/src/sn_comparator.h
@@ -37,6 +37,7 @@ typedef struct sn_comparator_s sn_comparator_t;
 sn_comparator_t *sn_comparator_create (int min, int max);
 void sn_comparator_destroy (sn_comparator_t *c);
 void sn_comparator_invert (sn_comparator_t *c);
+void sn_comparator_shift (sn_comparator_t *c, int sw, int inputs_num);
 void sn_comparator_swap (sn_comparator_t *c, int con0, int con1);
 
 int sn_comparator_compare (const void *, const void *);