From e4ab3198e16d6109bb38a0cca026af608b35e873 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Sun, 10 Aug 2014 13:11:52 -0600
Subject: [PATCH] Slightly improved nanosecond calculation

---
 libc/unistd/lib_usleep.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libc/unistd/lib_usleep.c b/libc/unistd/lib_usleep.c
index e48ae4267e..3088c7737b 100644
--- a/libc/unistd/lib_usleep.c
+++ b/libc/unistd/lib_usleep.c
@@ -129,14 +129,16 @@
 int usleep(useconds_t usec)
 {
   struct timespec rqtp;
+  time_t sec;
   int ret = 0;
 
   if (usec)
     {
       /* Let nanosleep() do all of the work. */
 
-      rqtp.tv_sec  = usec / 1000000;
-      rqtp.tv_nsec = (usec % 1000000) * 1000;
+      sec          = usec / 1000000;
+      rqtp.tv_sec  = sec;
+      rqtp.tv_nsec = (usec - (sec * 1000000)) * 1000;
 
       ret = nanosleep(&rqtp, NULL);
     }