include/machine/ieeefp.h

   1 #ifndef __IEEE_BIG_ENDIAN
   2 #ifndef __IEEE_LITTLE_ENDIAN
   3
   4 /* This file can define macros to choose variations of the IEEE float
   5    format:
   6
   7    _FLT_LARGEST_EXPONENT_IS_NORMAL
   8
   9         Defined if the float format uses the largest exponent for finite
  10         numbers rather than NaN and infinity representations.  Such a
  11         format cannot represent NaNs or infinities at all, but it's FLT_MAX
  12         is twice the IEEE value.
  13
  14    _FLT_NO_DENORMALS
  15
  16         Defined if the float format does not support IEEE denormals.  Every
  17         float with a zero exponent is taken to be a zero representation.
  18
  19    ??? At the moment, there are no equivalent macros for doubles and
  20    the macros are not fully supported by --enable-newlib-hw-fp.  */
  21
  22 #if defined(__arm__) || defined(__thumb__)
  23 /* ARM always has big-endian words.  Within those words the byte ordering
  24    will be big or little endian depending upon the target.  */
  25 #define __IEEE_BIG_ENDIAN
  26 #ifdef __ARMEL__
  27 #define __IEEE_BYTES_LITTLE_ENDIAN
  28 #endif
  29 #endif
  30
  31 #ifdef __hppa__
  32 #define __IEEE_BIG_ENDIAN
  33 #endif
  34
  35 #ifdef __sparc__
  36 #ifdef __LITTLE_ENDIAN_DATA__
  37 #define __IEEE_LITTLE_ENDIAN
  38 #else
  39 #define __IEEE_BIG_ENDIAN
  40 #endif
  41 #endif
  42
  43 #if defined(__m68k__) || defined(__mc68000__)
  44 #define __IEEE_BIG_ENDIAN
  45 #endif
  46
  47 #if defined (__H8300__) || defined (__H8300H__) || defined (__H8300S__)
  48 #define __IEEE_BIG_ENDIAN
  49 #define __SMALL_BITFIELDS
  50 #define _DOUBLE_IS_32BITS
  51 #endif
  52
  53 #ifdef __H8500__
  54 #define __IEEE_BIG_ENDIAN
  55 #define __SMALL_BITFIELDS
  56 #define _DOUBLE_IS_32BITS
  57 #endif
  58
  59 #ifdef __sh__
  60 #ifdef __LITTLE_ENDIAN__
  61 #define __IEEE_LITTLE_ENDIAN
  62 #else
  63 #define __IEEE_BIG_ENDIAN
  64 #endif
  65 #if defined(__SH3E__) || defined(__SH4_SINGLE_ONLY__)
  66 #define _DOUBLE_IS_32BITS
  67 #endif
  68 #endif
  69
  70 #ifdef _AM29K
  71 #define __IEEE_BIG_ENDIAN
  72 #endif
  73
  74 #ifdef _WIN32
  75 #define __IEEE_LITTLE_ENDIAN
  76 #endif
  77
  78 #ifdef __i386__
  79 #define __IEEE_LITTLE_ENDIAN
  80 #endif
  81
  82 #ifdef __i960__
  83 #define __IEEE_LITTLE_ENDIAN
  84 #endif
  85
  86 #ifdef __M32R__
  87 #define __IEEE_BIG_ENDIAN
  88 #endif
  89
  90 #ifdef __TIC80__
  91 #define __IEEE_LITTLE_ENDIAN
  92 #endif
  93
  94 #ifdef __MIPSEL__
  95 #define __IEEE_LITTLE_ENDIAN
  96 #endif
  97 #ifdef __MIPSEB__
  98 #define __IEEE_BIG_ENDIAN
  99 #endif
 100
 101 /* necv70 was __IEEE_LITTLE_ENDIAN. */
 102
 103 #ifdef __W65__
 104 #define __IEEE_LITTLE_ENDIAN
 105 #define __SMALL_BITFIELDS
 106 #define _DOUBLE_IS_32BITS
 107 #endif
 108
 109 #if defined(__Z8001__) || defined(__Z8002__)
 110 #define __IEEE_BIG_ENDIAN
 111 #endif
 112
 113 #ifdef __m88k__
 114 #define __IEEE_BIG_ENDIAN
 115 #endif
 116
 117 #ifdef __mn10300__
 118 #define __IEEE_LITTLE_ENDIAN
 119 #endif
 120
 121 #ifdef __mn10200__
 122 #define __IEEE_LITTLE_ENDIAN
 123 #define __SMALL_BITFIELDS
 124 #define _DOUBLE_IS_32BITS
 125 #endif
 126
 127 #ifdef __v800
 128 #define __IEEE_LITTLE_ENDIAN
 129 #endif
 130
 131 #ifdef __v850
 132 #define __IEEE_LITTLE_ENDIAN
 133 #endif
 134
 135 #ifdef __D10V__
 136 #define __IEEE_BIG_ENDIAN
 137 #define _DOUBLE_IS_32BITS
 138 #define __SMALL_BITFIELDS
 139 #endif
 140
 141 #ifdef __PPC__
 142 #if (defined(_BIG_ENDIAN) && _BIG_ENDIAN) || (defined(_AIX) && _AIX)
 143 #define __IEEE_BIG_ENDIAN
 144 #else
 145 #if (defined(_LITTLE_ENDIAN) && _LITTLE_ENDIAN) || (defined(__sun__) && __sun__) || (defined(_WIN32) && _WIN32)
 146 #define __IEEE_LITTLE_ENDIAN
 147 #endif
 148 #endif
 149 #endif
 150
 151 #ifdef __arc__
 152 #ifdef __big_endian__
 153 #define __IEEE_BIG_ENDIAN
 154 #else
 155 #define __IEEE_LITTLE_ENDIAN
 156 #endif
 157 #endif
 158
 159 #ifdef __fr30__
 160 #define __IEEE_BIG_ENDIAN
 161 #endif
 162
 163 #ifdef __mcore__
 164 #define __IEEE_BIG_ENDIAN
 165 #endif
 166
 167 #ifdef __ia64__
 168 #ifdef __BIG_ENDIAN__
 169 #define __IEEE_BIG_ENDIAN
 170 #else
 171 #define __IEEE_LITTLE_ENDIAN
 172 #endif
 173 #endif
 174
 175 #ifdef __AVR__
 176 #define __IEEE_LITTLE_ENDIAN
 177 #define __SMALL_BITFIELDS
 178 #define _DOUBLE_IS_32BITS
 179 #endif
 180
 181 #if defined(__or32__) || defined(__or1k__) || defined(__or16__)
 182 #define __IEEE_BIG_ENDIAN
 183 #endif
 184
 185
 186 #ifndef __IEEE_BIG_ENDIAN
 187 #ifndef __IEEE_LITTLE_ENDIAN
 188 #error Endianess not declared!!
 189 #endif /* not __IEEE_LITTLE_ENDIAN */
 190 #endif /* not __IEEE_BIG_ENDIAN */
 191
 192 #endif /* not __IEEE_LITTLE_ENDIAN */
 193 #endif /* not __IEEE_BIG_ENDIAN */
 194