1 files changed, 84 insertions, 0 deletions
diff --git a/lib/roken/timeval.c b/lib/roken/timeval.c
new file mode 100644
index 0000000..b72e202
--- /dev/null
+++ b/lib/roken/timeval.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 1999 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Timeval stuff
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+RCSID("$Id: timeval.c 14773 2005-04-12 11:29:18Z lha $");
+#endif
+
+#include "roken.h"
+
+/*
+ * Make `t1' consistent.
+ */
+
+void ROKEN_LIB_FUNCTION
+timevalfix(struct timeval *t1)
+{
+    if (t1->tv_usec < 0) {
+        t1->tv_sec--;
+        t1->tv_usec += 1000000;
+    }
+    if (t1->tv_usec >= 1000000) {
+        t1->tv_sec++;
+        t1->tv_usec -= 1000000;
+    }
+}
+ 
+/*
+ * t1 += t2
+ */
+
+void ROKEN_LIB_FUNCTION
+timevaladd(struct timeval *t1, const struct timeval *t2)
+{
+    t1->tv_sec  += t2->tv_sec;
+    t1->tv_usec += t2->tv_usec;
+    timevalfix(t1);
+}
+ 
+/*
+ * t1 -= t2
+ */
+
+void ROKEN_LIB_FUNCTION
+timevalsub(struct timeval *t1, const struct timeval *t2)
+{
+    t1->tv_sec  -= t2->tv_sec;
+    t1->tv_usec -= t2->tv_usec;
+    timevalfix(t1);
+}