watch: support fractional -n SEC

function                                             old     new   delta
watch_main                                           212     232     +20

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 3366df30f..7a1e13875 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1040,9 +1040,11 @@ uint16_t xatou16(const char *numstr) FAST_FUNC;
 #if ENABLE_FLOAT_DURATION
 typedef double duration_t;
 void sleep_for_duration(duration_t duration) FAST_FUNC;
+#define DURATION_FMT "f"
 #else
 typedef unsigned duration_t;
 #define sleep_for_duration(duration) sleep(duration)
+#define DURATION_FMT "u"
 #endif
 duration_t parse_duration_str(char *str) FAST_FUNC;