Changeset 1971 for features/performance/src/common/timer.c

Timestamp:

04/09/08 15:37:35 (9 months ago)

Author:

aturner

Message:

switch to timespec (nanosecond precision) for sleeping. OS X's AbsoluteTime?
methods are really damn accurate! refs #41

Files:

• features/performance/src/common/timer.c (modified) (1 diff)

features/performance/src/common/timer.c

@@ -54 +54 @@
     tvp->tv_usec = interval - (tvp->tv_sec * 1000000);
 }
+
+/* Divide tvs by div, storing the result in tvs */
+void timesdiv(struct timespec *tvs, float div)
+{
+    double interval;
+    
+    if (div == 0 || div == 1)
+        return;
+        
+    interval = ((double)tvs->tv_sec * 1000000000 + tvs->tv_nsec) / (double)div;
+    tvs->tv_sec = interval / (int)1000000000;
+    tvs->tv_nsec = interval - (tvs->tv_nsec * 1000000000);
+}
+