[PATCH 06/16] confdefs: Warn about problematic ticks per second

[Sebastian Huber]

A non-integer clock ticks per second value may lead to inaccurate time
format conversions.

Update #3117.
Update #3182.
---
 cpukit/sapi/include/confdefs.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cpukit/sapi/include/confdefs.h b/cpukit/sapi/include/confdefs.h
index 3dfcf9b2d5..13e97c9487 100755
--- a/cpukit/sapi/include/confdefs.h
+++ b/cpukit/sapi/include/confdefs.h
@@ -2287,6 +2287,10 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
             RTEMS_MILLISECONDS_TO_MICROSECONDS(10)
   #endif
 
+  #if 1000000 % CONFIGURE_MICROSECONDS_PER_TICK != 0
+    #warning "The clock ticks per second is not an integer"
+  #endif
+
   #define _CONFIGURE_TICKS_PER_SECOND (1000000 / CONFIGURE_MICROSECONDS_PER_TICK)
 
   /** The configures the number of clock ticks per timeslice. */
-- 
2.12.3