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/*-
* Copyright (c) 2001 FreeBSD Inc.
* All rights reserved.
*
* 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
*
* Redistribution and use under the terms of the COPYRIGHT file at the
* base of the source tree.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/time.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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