1 files changed, 12 insertions, 0 deletions
diff --git a/helper.c b/helper.c
index 9920c5d..0290563 100644
--- a/helper.c
+++ b/helper.c
@@ -8,3 +8,15 @@ double map_range(double x, double src_lo, double src_hi, double dest_lo, double
 
     return (x - src_lo) / src_len * dest_len + dest_lo;
 }
+
+int *inclusive_range(int start, int end)
+{
+    if (end < start)
+        return NULL;
+    int *range = malloc(sizeof(int) * (end - start + 1));
+    if (range == NULL)
+        return NULL;
+    for (int i = 0; start < end; i++)
+        range[i] = start++;
+    return range;
+}