cpusleep plugin: calculating in integers

diff --git a/src/cpusleep.c b/src/cpusleep.c
index 9a0e17e..4d3547a 100644 (file)
--- a/src/cpusleep.c
+++ b/src/cpusleep.c
@@ -71,7 +71,9 @@ static int cpusleep_read(void)
 
        // to avoid false positives in counter overflow due to reboot,
        // derive is used. Sleep is calculated in milliseconds
-       derive_t sleep = (derive_t) ((b.tv_sec - m.tv_sec)*1e3 + (b.tv_nsec - m.tv_nsec)*1e-6);  
+       derive_t diffsec = b.tv_sec - m.tv_sec;
+       derive_t diffnsec = b.tv_nsec - m.tv_nsec;
+       derive_t sleep = diffsec * 1000 + diffnsec / 1000000;
 
        cpusleep_submit(sleep);