Re: Next priority: Maximum value of simulation time

John,

I was thinking of something along the lines of:

Constant SC_MAX_TIME represents the maximum simulated time that may be
reached.

The definition could be implementation-defined. Alternatively it could be
implemented by something like:

const sc_time SC_MAX_TIME =
sc_time(double(~0ULL)/sc_get_time_resolution().to_seconds(), SC_SEC);

There is a constant UINT64_ZERO in sc_nbdefs.cpp that could be used in
place of 0ULL but that is not mentioned in IEEE 1666-2005.

Dave

From:
john.aynsley@doulos.com
To:
david.long@doulos.com, systemc-p1666-technical@eda.org
Date:
13/09/2010 13:46
Subject:
Next priority: Maximum value of simulation time
Sent by:
owner-systemc-p1666-technical@eda.org

Dave,

You wrote:

"5.10.1 states that time shall be represented internally by an unsigned
integer of at least 64 bits. However, it does not provide any method to
create an sc_time object that corresponds to the largest representable
time (the sc_time constructor that takes a numeric value has double
sc_time_unit arguments). One way to represent the maximum time would be to
declare a "constant" sc_time object (e.g. SC_MAX_TIME) that took acount of
the global time resolution that applies to the current simulation."

Could you provide a spec and/or implementation for what you propose?

Thanks,

John A

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