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diff --git a/Utilities/cmcurl/lib/timeval.h b/Utilities/cmcurl/lib/timeval.h
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+++ b/Utilities/cmcurl/lib/timeval.h
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+#ifndef HEADER_CURL_TIMEVAL_H
+#define HEADER_CURL_TIMEVAL_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#include "timediff.h"
+
+struct curltime {
+  time_t tv_sec; /* seconds */
+  int tv_usec;   /* microseconds */
+};
+
+struct curltime Curl_now(void);
+
+/*
+ * Make sure that the first argument (newer) is the more recent time and older
+ * is the older time, as otherwise you get a weird negative time-diff back...
+ *
+ * Returns: the time difference in number of milliseconds.
+ */
+timediff_t Curl_timediff(struct curltime newer, struct curltime older);
+
+/*
+ * Make sure that the first argument (newer) is the more recent time and older
+ * is the older time, as otherwise you get a weird negative time-diff back...
+ *
+ * Returns: the time difference in number of milliseconds, rounded up.
+ */
+timediff_t Curl_timediff_ceil(struct curltime newer, struct curltime older);
+
+/*
+ * Make sure that the first argument (newer) is the more recent time and older
+ * is the older time, as otherwise you get a weird negative time-diff back...
+ *
+ * Returns: the time difference in number of microseconds.
+ */
+timediff_t Curl_timediff_us(struct curltime newer, struct curltime older);
+
+#endif /* HEADER_CURL_TIMEVAL_H */