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<H1><A NAME="SECTION02430000000000000000">
Fundamental Types</A>
</H1>
<P>
<BR><P></P>
<DIV ALIGN="CENTER">
<A NAME="tbl:basics:fundamental_types"></A>
<DIV ALIGN="CENTER">
<A NAME="2104"></A>
<TABLE CELLPADDING=3 BORDER="1">
<CAPTION><STRONG>Table 5.1:</STRONG>
SIDL Types</CAPTION>
<TR><TH ALIGN="LEFT"><SPAN CLASS="textbf">SIDL TYPE</SPAN></TH>
<TH ALIGN="RIGHT"><SPAN CLASS="textbf">SIZE (BITS)</SPAN></TH>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">bool</I></TT></TD>
<TD ALIGN="RIGHT">1</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">char</I></TT></TD>
<TD ALIGN="RIGHT">8</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">int</I></TT></TD>
<TD ALIGN="RIGHT">32</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">long</I></TT></TD>
<TD ALIGN="RIGHT">64</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">float</I></TT></TD>
<TD ALIGN="RIGHT">32</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">double</I></TT></TD>
<TD ALIGN="RIGHT">64</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">fcomplex</I></TT></TD>
<TD ALIGN="RIGHT">64</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">dcomplex</I></TT></TD>
<TD ALIGN="RIGHT">128</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">opaque</I></TT></TD>
<TD ALIGN="RIGHT">64</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">string</I></TT></TD>
<TD ALIGN="RIGHT">varies</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">enum</I></TT></TD>
<TD ALIGN="RIGHT">32</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">interface</I></TT></TD>
<TD ALIGN="RIGHT">varies</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">class</I></TT></TD>
<TD ALIGN="RIGHT">varies</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">array<SPAN CLASS="MATH"><IMG
WIDTH="15" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img7.png"
ALT="$<$"></SPAN>Type,Dim<SPAN CLASS="MATH"><IMG
WIDTH="15" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img8.png"
ALT="$>$"></SPAN></I></TT></TD>
<TD ALIGN="RIGHT">varies</TD>
</TR>
<TR><TD ALIGN="LEFT"><TT><I CLASS="slanted">rarray<SPAN CLASS="MATH"><IMG
WIDTH="15" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img7.png"
ALT="$<$"></SPAN>Type,Dim<SPAN CLASS="MATH"><IMG
WIDTH="26" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img9.png"
ALT="$>($"></SPAN></TT><I>index variables</I><TT><SPAN CLASS="MATH"><IMG
WIDTH="9" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img10.png"
ALT="$)$"></SPAN></I></TT></TD>
<TD ALIGN="RIGHT">varies</TD>
</TR>
</TABLE>
</DIV>
</DIV>
<BR>
<P>
Table <A HREF="#tbl:basics:fundamental_types"
NAME="2130">5.1</A><A NAME="2131"></A> briefly
shows the different data types that are supported
in Babel. Refer to each chapter for the language specific bindings
for each SIDL type. The ``S'' in SIDL stands for
``Scientific.'' This emphasis is reflected in the
fundamental support for complex numbers (<TT><I CLASS="slanted">fcomplex</I></TT>
and <TT><I CLASS="slanted">dcomplex</I></TT>) and dynamic multidimensional arrays
(<TT><I CLASS="slanted">array<SPAN CLASS="MATH"><IMG
WIDTH="15" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img7.png"
ALT="$<$"></SPAN>Type,Dim<SPAN CLASS="MATH"><IMG
WIDTH="15" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img8.png"
ALT="$>$"></SPAN></I></TT>).
<P>
C++ developers looking at the SIDL syntax for arrays,
might think that SIDL is a templated IDL, but this
is not so. Although the syntax for SIDL arrays looks
like a template, it is specific only to the array type.
Developers cannot create templated classes or methods
in SIDL.
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Although C++ templates are a very powerful programming
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<P>
Discussion of the various types is broken up into sections.
Numeric types such as <TT><I CLASS="slanted">bool</I></TT>, <TT><I CLASS="slanted">char</I></TT>, <TT><I CLASS="slanted">int</I></TT>,
<TT><I CLASS="slanted">long</I></TT>, <TT><I CLASS="slanted">float</I></TT>, <TT><I CLASS="slanted">double</I></TT>, <TT><I CLASS="slanted">fcomplex</I></TT>,
<TT><I CLASS="slanted">dcomplex</I></TT>, <TT><I CLASS="slanted">string</I></TT>s, as well as information about
enumerated types and the opaque type are all covered in this Subsection <A HREF="node55.html#ssec:basics:fundamental:numbers">5.3</A>.
<P>
Information about extended types such as
Interfaces and Classes along with the methods they contain are described in Section <A HREF="node103.html#sec:basics:objects">5.6</A>, and Section <A HREF="node59.html#s:arrays">5.4</A> covers Array.
<P>
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<LI><A NAME="tex2html1428"
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<LI><A NAME="tex2html1429"
HREF="node56.html">Strings</A>
<LI><A NAME="tex2html1430"
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<LI><A NAME="tex2html1431"
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<br><br>babel-0.10.2<br>users_guide Last Modified 2005-03-23<br><br><a href="http://www.llnl.gov/CASC/components">http://www.llnl.gov/CASC/components</a><br><a href="mailto:components@llnl.gov">components@llnl.gov</a>
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