Update src/bmi_cfe.c

Co-authored-by: Nels <[email protected]>

src/bmi_cfe.c

@@ -2143,6 +2143,9 @@ static int Set_value_at_indices (Bmi *self, const char *name, int * inds, int le
       size_t i;
       size_t offset;
       char * ptr;
+      // iterate over the source pointer, src, by itemsize byte chunks
+      // and set the destination pointer, dest, to the value in src 
+      // based on the linear offset provided by inds[i]
       for (i=0, ptr=(char*)src; i<len; i++, ptr+=itemsize) {
 	offset = inds[i] * itemsize;
 	memcpy ((char*)dest + offset, ptr, itemsize);