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   6 <TITLE>The SUIF Version 1 Library - Base Types</TITLE>
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  17 <H2><A NAME="SEC61" HREF="suif1_toc.html#TOC61">Base Types</A></H2>
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  25 The <CODE>TYPE_VOID</CODE>, <CODE>TYPE_INT</CODE>, <CODE>TYPE_FLOAT</CODE>, and
  26 <CODE>TYPE_ENUM</CODE> operators define the base types.  Whereas other kinds
  27 of types are defined in terms of existing types, the base types stand
  28 alone.  The <CODE>base_type</CODE> class is derived from <CODE>type_node</CODE> to
  29 hold the base types.  It has only two fields: the size and a flag to
  30 indicate whether integer and enumerated types are signed or unsigned.
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  37 The <CODE>set_size</CODE> method sets the size of a base type in bits.  Types
  38 with a <CODE>TYPE_VOID</CODE> operator should always have a size of zero.
  39 Integer and floating-point types can have any sizes, although normally
  40 the sizes are restricted by the target machine parameters (see section <A HREF="suif1_103.html#SEC103">Target Machine Parameters</A>).  Other sizes may cause the code generator to fail.
  41 For integer and enumerated types, the <CODE>is_signed</CODE> method is used to
  42 check the flag that indicates whether they are signed or unsigned.  The
  43 <CODE>set_signed</CODE> method changes the value of the flag.
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  47 Besides the features that they share with the other base types,
  48 enumerated types have other fields and methods used to record the names
  49 and values of their members.  See section <A HREF="suif1_66.html#SEC66">Enumerated Types</A>.
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