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   6 <TITLE>The SUIF Version 1 Library - Predefined Types</TITLE>
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  17 <H2><A NAME="SEC68" HREF="suif1_toc.html#TOC68">Predefined Types</A></H2>
  18 <P>
  19 <A NAME="IDX511"></A>
  20 <A NAME="IDX512"></A>
  21
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  23 <P>
  24 The global symbol table (see section <A HREF="suif1_42.html#SEC42">The Global Symbol Table</A>) is initialized
  25 with some predefined types.  The SUIF library also defines a number of
  26 variables containing pointers to these predefined types, so that you
  27 don't need to search the symbol tables for most commonly-used types.
  28 The first set of predefined types are fixed-size scalar types:
  29
  30 </P>
  31 <DL COMPACT>
  32
  33 <DT><CODE>type_v0</CODE>
  34 <DD>
  35 <A NAME="IDX513"></A>
  36 This is a <CODE>void</CODE> type with size zero.
  37
  38 <DT><CODE>type_s8</CODE>
  39 <DD>
  40 <A NAME="IDX514"></A>
  41 <DT><CODE>type_s16</CODE>
  42 <DD>
  43 <A NAME="IDX515"></A>
  44 <DT><CODE>type_s32</CODE>
  45 <DD>
  46 <A NAME="IDX516"></A>
  47 <DT><CODE>type_s64</CODE>
  48 <DD>
  49 <A NAME="IDX517"></A>
  50 These are signed integer types of 8, 16, 32, and 64 bits.
  51
  52 <DT><CODE>type_u8</CODE>
  53 <DD>
  54 <A NAME="IDX518"></A>
  55 <DT><CODE>type_u16</CODE>
  56 <DD>
  57 <A NAME="IDX519"></A>
  58 <DT><CODE>type_u32</CODE>
  59 <DD>
  60 <A NAME="IDX520"></A>
  61 <DT><CODE>type_u64</CODE>
  62 <DD>
  63 <A NAME="IDX521"></A>
  64 These are unsigned integer types of 8, 16, 32, and 64 bits.
  65
  66 <DT><CODE>type_f32</CODE>
  67 <DD>
  68 <A NAME="IDX522"></A>
  69 <DT><CODE>type_f64</CODE>
  70 <DD>
  71 <A NAME="IDX523"></A>
  72 <DT><CODE>type_f128</CODE>
  73 <DD>
  74 <A NAME="IDX524"></A>
  75 These are floating-point types of 32, 64, and 128 bits.
  76
  77 <DT><CODE>type_error</CODE>
  78 <DD>
  79 <A NAME="IDX525"></A>
  80 This variable is just set to <CODE>NULL</CODE>.  It may be used to represent
  81 various error conditions.
  82 </DL>
  83
  84 <P>
  85 Because the fixed-size types do not necessarily match the target machine
  86 parameters (see section <A HREF="suif1_103.html#SEC103">Target Machine Parameters</A>), they should rarely be
  87 used.  Instead the SUIF library also predefines pointers to types that
  88 correspond to the most common C types.  These "portable" types are
  89 automatically initialized using the target machine parameters.
  90
  91 </P>
  92 <DL COMPACT>
  93
  94 <DT><CODE>type_void</CODE>
  95 <DD>
  96 <A NAME="IDX526"></A>
  97 Since <CODE>void</CODE> types always have a size of zero, this type is
  98 equivalent to <CODE>type_v0</CODE>, but it is included for completeness.
  99
 100 <DT><CODE>type_ptr</CODE>
 101 <DD>
 102 <A NAME="IDX527"></A>
 103 This type is a pointer to <CODE>type_void</CODE>.  Like all other pointer
 104 types, it automatically has the size of pointers on the target machine.
 105
 106 <DT><CODE>type_char</CODE>
 107 <DD>
 108 <A NAME="IDX528"></A>
 109 This is an integer type with the size specified for <CODE>C_char</CODE> types
 110 in the target machine parameters.  The <CODE>char_is_signed</CODE> machine
 111 parameter determines whether it is signed or unsigned.
 112
 113 <DT><CODE>type_signed_char</CODE>
 114 <DD>
 115 <A NAME="IDX529"></A>
 116 <DT><CODE>type_unsigned_char</CODE>
 117 <DD>
 118 <A NAME="IDX530"></A>
 119 These are signed and unsigned integer types with the size specified for
 120 <CODE>C_char</CODE> types in the target machine parameters.
 121
 122 <DT><CODE>type_signed_short</CODE>
 123 <DD>
 124 <A NAME="IDX531"></A>
 125 <DT><CODE>type_unsigned_short</CODE>
 126 <DD>
 127 <A NAME="IDX532"></A>
 128 These are signed and unsigned integer types with the size specified for
 129 <CODE>C_short</CODE> types in the target machine parameters.
 130
 131 <DT><CODE>type_signed</CODE>
 132 <DD>
 133 <A NAME="IDX533"></A>
 134 <DT><CODE>type_unsigned</CODE>
 135 <DD>
 136 <A NAME="IDX534"></A>
 137 These are signed and unsigned integer types with the size specified for
 138 <CODE>C_int</CODE> types in the target machine parameters.
 139
 140 <DT><CODE>type_signed_long</CODE>
 141 <DD>
 142 <A NAME="IDX535"></A>
 143 <DT><CODE>type_unsigned_long</CODE>
 144 <DD>
 145 <A NAME="IDX536"></A>
 146 These are signed and unsigned integer types with the size specified for
 147 <CODE>C_long</CODE> types in the target machine parameters.
 148
 149 <DT><CODE>type_signed_longlong</CODE>
 150 <DD>
 151 <A NAME="IDX537"></A>
 152 <DT><CODE>type_unsigned_longlong</CODE>
 153 <DD>
 154 <A NAME="IDX538"></A>
 155 These are signed and unsigned integer types with the size specified for
 156 <CODE>C_longlong</CODE> types in the target machine parameters.
 157
 158 <DT><CODE>type_float</CODE>
 159 <DD>
 160 <A NAME="IDX539"></A>
 161 <DT><CODE>type_double</CODE>
 162 <DD>
 163 <A NAME="IDX540"></A>
 164 <DT><CODE>type_longdouble</CODE>
 165 <DD>
 166 <A NAME="IDX541"></A>
 167 These are floating-point types with the sizes specified for
 168 <CODE>C_float</CODE>, <CODE>C_double</CODE>, and <CODE>C_longdouble</CODE> types in the
 169 target machine parameters.
 170 </DL>
 171
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