Add documentation and fix the one that's already there

1 files changed, 1 insertions, 0 deletions

diff --git a/src/redo.c b/src/redo.c
index b70cad7..40946dc 100644
--- a/src/redo.c
+++ b/src/redo.c
@@ -13,6 +13,7 @@
 #include "dbg.h"
 
 
+/* Returns the amount of digits a number n has in decimal. */
 static inline int digits(unsigned n) {
   return (int) log10(n) + 1;
 }