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% Copyright (C) 2008, 2010, 2011, 2012, 2014 Bert Burgemeister
%
% Permission is granted to copy, distribute and/or modify this
% document under the terms of the GNU Free Documentation License,
% Version 1.2; with no Invariant Sections, no Front-Cover Texts and
% no Back-Cover Texts. For details see file COPYING.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\section{External Environment}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{LIST}{1cm}
\IT{\arrGOO{(\FU*{GET-INTERNAL-REAL-TIME})\\
(\FU*{GET-INTERNAL-RUN-TIME})}{.}}
{
\retval{Current time}, or \retval{computing time},
respectively, in clock ticks.
}
\IT{\CNS*{INTERNAL-TIME-UNITS-PER-SECOND}}
{
Number of clock ticks per second.
}
\IT{\arrGOO{%
(\FU*{ENCODE-UNIVERSAL-TIME}
\VAR{\hspace{.7ex}sec} \VAR{\hspace{.7ex}min}
\VAR{\hspace{.7ex}hour} \VAR{\hspace{.7ex}date}
\VAR{\hspace{.7ex}month} \VAR{\hspace{.7ex}year\hspace{1ex}}
\Op{\VAR{zone}\DF{curr}})\\
(\FU*{GET-UNIVERSAL-TIME})}{.}}
{
\retval{Seconds from 1900-01-01, 00:00}, ignoring leap seconds.
}
\IT{\arrGOO{(\FU*{DECODE-UNIVERSAL-TIME} \VAR{ universal-time }
\Op{\VAR{time-zone}\DF{current}})\\
(\FU*{GET-DECODED-TIME})}{.}}
{
Return \retval{second}, \retvalii{minute}, \retvaliii{hour},
\retvaln{4}{date}, \retvaln{5}{month}, \retvaln{6}{year},
\retvaln{7}{day}, \retvaln{8}{daylight-p}, and \retvaln{9}{zone}.
}
\IT{\arrGOO{(\FU*{SHORT-SITE-NAME})\\
(\FU*{LONG-SITE-NAME})}{.}}
{
\retval{String} representing physical location of computer.
}
\IT{(\xorGOO{\FU{LISP-IMPLEMENTATION}\\
\FU{SOFTWARE}\\
\FU{MACHINE}}{\}}\kwd{-}%
\xorGOO{\kwd{TYPE}\\
\kwd{VERSION}}{\}})}
{
\index{LISP-IMPLEMENTATION-TYPE}%
\index{LISP-IMPLEMENTATION-VERSION}%
\index{SOFTWARE-TYPE}%
\index{SOFTWARE-VERSION}%
\index{MACHINE-TYPE}%
\index{MACHINE-VERSION}%
\retval{Name} or \retval{version} of implementation, operating
system, or hardware, respectively.
}
\IT{(\FU*{MACHINE-INSTANCE})}
{
\retval{Computer name}.
}
\end{LIST}
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