text: #ifndef __TIMEVAL_H
  #define __TIMEVAL_H
  /***************************************************************************
   *                                  _   _ ____  _
   *  Project                     ___| | | |  _ \| |
   *                             / __| | | | |_) | |
   *                            | (__| |_| |  _ <| |___
   *                             \___|\___/|_| \_\_____|
   *
   * Copyright (C) 1998 - 2004, 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 http://curl.haxx.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.
   *
   * Id
   ***************************************************************************/
  
  /*
   * CAUTION: this header is designed to work when included by the app-side
   * as well as the library. Do not mix with library internals!
   */
  
  #include "setup.h"
  
  #if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
  #include <time.h>
  #else
  #include <sys/time.h>
  #endif
  
  #ifndef HAVE_GETTIMEOFDAY
  #if !defined(_WINSOCKAPI_) && !defined(__WATCOMC__) && !defined(__MINGW32__) && !defined(_AMIGASF) && \
      !defined(__LCC__)
  struct timeval {
   long tv_sec;
   long tv_usec;
  };
  #endif
  #endif
  
  struct timeval curlx_tvnow(void);
  
  /*
   * Make sure that the first argument (t1) is the more recent time and t2 is
   * the older time, as otherwise you get a weird negative time-diff back...
   *
   * Returns: the time difference in number of milliseconds.
   */
  long curlx_tvdiff(struct timeval t1, struct timeval t2);
  
  /*
   * Same as curlx_tvdiff but with full usec resolution.
   *
   * Returns: the time difference in seconds with subsecond resolution.
   */
  double curlx_tvdiff_secs(struct timeval t1, struct timeval t2);
  
  long Curl_tvlong(struct timeval t1);
  
  /* These two defines below exist to provide the older API for library
     internals only. */
  #define Curl_tvnow() curlx_tvnow()
  #define Curl_tvdiff(x,y) curlx_tvdiff(x,y)
  #define Curl_tvdiff_secs(x,y) curlx_tvdiff_secs(x,y)
  
  #endif
  