1 files changed, 3 insertions, 1 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 9e6ee8434..73aea409e 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -704,8 +704,10 @@ void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale) FAST_F
 void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC;
 /* If block_size == 0, display size without fractional part,
  * else display (size * block_size) with one decimal digit.
- * If display_unit == 0, add suffix (K,M,G...),
+ * If display_unit == 0, show value no bigger than 1024 with suffix (K,M,G...),
  * else divide by display_unit and do not use suffix. */
+#define HUMAN_READABLE_MAX_WIDTH      7  /* "1024.0G" */
+#define HUMAN_READABLE_MAX_WIDTH_STR "7"
 //TODO: provide pointer to buf (avoid statics)?
 const char *make_human_readable_str(unsigned long long size,
                 unsigned long block_size, unsigned long display_unit) FAST_FUNC;