kc3-lang/libbsd/src/timeconv.c

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• Hash : 8e8834d8
  Author :
  Date : 2017-06-14T02:53:35
  

  Remove RCSID tags These are obsolete markers, and in some cases they repeat the information already present in the comment header.

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• src/timeconv.c

• /*-
   * Copyright (c) 2001 FreeBSD Inc.
   * 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.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
   *
   * These routines are for converting time_t to fixed-bit representations
   * for use in protocols or storage.  When converting time to a larger
   * representation of time_t these routines are expected to assume temporal
   * locality and use the 50-year rule to properly set the msb bits.  XXX
   *
   */
  
  #include <sys/cdefs.h>
  #include <sys/types.h>
  #include <timeconv.h>
  
  /*
   * Convert a 32 bit representation of time_t into time_t.  XXX needs to
   * implement the 50-year rule to handle post-2038 conversions.
   */
  time_t
  _time32_to_time(int32_t t32)
  {
      return((time_t)t32);
  }
  
  /*
   * Convert time_t to a 32 bit representation.  If time_t is 64 bits we can
   * simply chop it down.   The resulting 32 bit representation can be
   * converted back to a temporally local 64 bit time_t using time32_to_time.
   */
  int32_t
  _time_to_time32(time_t t)
  {
      return((int32_t)t);
  }
  
  /*
   * Convert a 64 bit representation of time_t into time_t.  If time_t is
   * represented as 32 bits we can simply chop it and not support times
   * past 2038.
   */
  time_t
  _time64_to_time(int64_t t64)
  {
      return((time_t)t64);
  }
  
  /*
   * Convert time_t to a 64 bit representation.  If time_t is represented
   * as 32 bits we simply sign-extend and do not support times past 2038.
   */
  int64_t
  _time_to_time64(time_t t)
  {
      return((int64_t)t);
  }
  
  /*
   * Convert to/from 'long'.  Depending on the sizeof(long) this may or
   * may not require using the 50-year rule.
   */
  long
  _time_to_long(time_t t)
  {
      if (sizeof(long) == sizeof(int64_t))
  	return(_time_to_time64(t));
      return((long)t);
  }
  
  time_t
  _long_to_time(long tlong)
  {
      if (sizeof(long) == sizeof(int32_t))
  	return(_time32_to_time(tlong));
      return((time_t)tlong);
  }
  
  /*
   * Convert to/from 'int'.  Depending on the sizeof(int) this may or
   * may not require using the 50-year rule.
   */
  int
  _time_to_int(time_t t)
  {
      if (sizeof(int) == sizeof(int64_t))
  	return(_time_to_time64(t));
      return((int)t);
  }
  
  time_t
  _int_to_time(int tint)
  {
      if (sizeof(int) == sizeof(int32_t))
  	return(_time32_to_time(tint));
      return((time_t)tint);
  }
  

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