53 lines
1.5 KiB
TeX
53 lines
1.5 KiB
TeX
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\subsubsection{Name}
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Extend -- Extention of nets
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\subsubsection{Synopsys}
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\begin{verbatim}
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extendA = Signal ( "extend_a", 32 )
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extendA <= netA.Extend ( 32, 'zero' )
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\end{verbatim}
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\subsubsection{Description}
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This method creates a net which is an extension of the net which it is applied to. The number given as parameter has to be greater than the arity of the net.
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\subsubsection{Parameters}
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\begin{itemize}
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\item \verb-n- : the number which is the arity of the net
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\item \verb-type- : the type of the extension
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\begin{itemize}
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\item 'zero' : the extension nets are set to zero
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\item 'one' : the extension nets are set to one
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\item 'signed' : the extension nets are set thanks to the value of the msb bit
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\end{itemize}
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\end{itemize}
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\subsubsection{Example}
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\begin{verbatim}
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temp = Signal ( "temp", 5 )
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tempExt = Signal ( "temp_ext", 8 )
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tempExt <= temp.Extand ( 8, 'one' )
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\end{verbatim}
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\indent The arity of the net \verb-tempExt- is 8 and 3 MSB of the net are "1".
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\subsubsection{Errors}
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Some errors may occur :
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\begin{itemize}
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\item \verb-[Stratus ERROR] Extend :-\\\verb-the net can not be extended to n bits, it's arity is already m.-\\The number one wants must be greater than the arity of the net. Otherwise, the net can not be extended.
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\end{itemize}
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\subsubsection{See Also}
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\hyperref[ref]{\emph{Introduction}}{}{Introduction}{secintroduction}
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\hyperref[ref]{\emph{Nets}}{}{Nets}{secnet}
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\hyperref[ref]{\emph{Alias}}{}{Alias}{secalias}
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\hyperref[ref]{\emph{Cat}}{}{Cat}{seccat}
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