Calculate clock rounding constant

Compute the first power of ten which is greater than 0.1% of the clock
rate. Save the result, and use it to round future results. The
previous constant value - 1e7 - didn't work properly on aarch64.

Change-Id: Ic021e3eb1b90c0d4a7d9f1b6425123f0c8b48b0b
Signed-off-by: Dave Barach <dave@barachs.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/vppinfra/time.h b/src/vppinfra/time.h
index 64370d523bb..0327ce0fd05 100644
--- a/src/vppinfra/time.h
+++ b/src/vppinfra/time.h
@@ -56,6 +56,8 @@ typedef struct
      from clock cycles into seconds. */
   f64 seconds_per_clock;
 
+  f64 round_to_units;
+
   /* Time stamp of call to clib_time_init call. */
   u64 init_cpu_time;