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 above for doubles and
  20:    the macros are not fully supported by --enable-newlib-hw-fp.
  21: 
  22:    __IEEE_BIG_ENDIAN
  23: 
  24:         Defined if the float format is big endian.  This is mutually exclusive
  25:         with __IEEE_LITTLE_ENDIAN.
  26: 
  27:    __IEEE_LITTLE_ENDIAN
  28:  
  29:         Defined if the float format is little endian.  This is mutually exclusive
  30:         with __IEEE_BIG_ENDIAN.
  31: 
  32:    Note that one of __IEEE_BIG_ENDIAN or __IEEE_LITTLE_ENDIAN must be specified for a
  33:    platform or error will occur.
  34: 
  35:    __IEEE_BYTES_LITTLE_ENDIAN
  36: 
  37:         This flag is used in conjunction with __IEEE_BIG_ENDIAN to describe a situation 
  38:   whereby multiple words of an IEEE floating point are in big endian order, but the
  39:   words themselves are little endian with respect to the bytes.
  40: 
  41:    _DOUBLE_IS_32_BITS 
  42: 
  43:         This is used on platforms that support double by using the 32-bit IEEE
  44:         float type.
  45: 
  46:    _FLOAT_ARG
  47: 
  48:         This represents what type a float arg is passed as.  It is used when the type is
  49:         not promoted to double.
  50:   
  51: */
  52: 
  53: #if (defined(__arm__) || defined(__thumb__)) && !defined(__MAVERICK__)
  54: /* ARM traditionally used big-endian words; and within those words the
  55:    byte ordering was big or little endian depending upon the target.
  56:    Modern floating-point formats are naturally ordered; in this case
  57:    __VFP_FP__ will be defined, even if soft-float.  */
  58: #ifdef __VFP_FP__
  59: # ifdef __ARMEL__
  60: #  define __IEEE_LITTLE_ENDIAN
  61: # else
  62: #  define __IEEE_BIG_ENDIAN
  63: # endif
  64: #else
  65: # define __IEEE_BIG_ENDIAN
  66: # ifdef __ARMEL__
  67: #  define __IEEE_BYTES_LITTLE_ENDIAN
  68: # endif
  69: #endif
  70: #endif
  71: 
  72: #ifdef __hppa__
  73: #define __IEEE_BIG_ENDIAN
  74: #endif
  75: 
  76: #ifdef __sparc__
  77: #ifdef __LITTLE_ENDIAN_DATA__
  78: #define __IEEE_LITTLE_ENDIAN
  79: #else
  80: #define __IEEE_BIG_ENDIAN
  81: #endif
  82: #endif
  83: 
  84: #if defined(__m68k__) || defined(__mc68000__)
  85: #define __IEEE_BIG_ENDIAN
  86: #endif
  87: 
  88: #if defined(__mc68hc11__) || defined(__mc68hc12__) || defined(__mc68hc1x__)
  89: #define __IEEE_BIG_ENDIAN
  90: #ifdef __HAVE_SHORT_DOUBLE__
  91: # define _DOUBLE_IS_32BITS
  92: #endif
  93: #endif
  94: 
  95: #if defined (__H8300__) || defined (__H8300H__) || defined (__H8300S__) || defined (__H8500__)
  96: #define __IEEE_BIG_ENDIAN
  97: #define _FLOAT_ARG float
  98: #define _DOUBLE_IS_32BITS
  99: #endif
 100: 
 101: #ifdef __sh__
 102: #ifdef __LITTLE_ENDIAN__
 103: #define __IEEE_LITTLE_ENDIAN
 104: #else
 105: #define __IEEE_BIG_ENDIAN
 106: #endif
 107: #if defined(__SH2E__) || defined(__SH3E__) || defined(__SH4_SINGLE_ONLY__)
 108: #define _DOUBLE_IS_32BITS
 109: #endif
 110: #endif
 111: 
 112: #ifdef _AM29K
 113: #define __IEEE_BIG_ENDIAN
 114: #endif
 115: 
 116: #ifdef _WIN32
 117: #define __IEEE_LITTLE_ENDIAN
 118: #endif
 119: 
 120: #ifdef __i386__
 121: #define __IEEE_LITTLE_ENDIAN
 122: #endif
 123: 
 124: #ifdef __i960__
 125: #define __IEEE_LITTLE_ENDIAN
 126: #endif
 127: 
 128: #ifdef __M32R__
 129: #define __IEEE_BIG_ENDIAN
 130: #endif
 131: 
 132: #if defined(_C4x) || defined(_C3x)
 133: #define __IEEE_BIG_ENDIAN
 134: #define _DOUBLE_IS_32BITS
 135: #endif
 136: 
 137: #ifdef __TIC80__
 138: #define __IEEE_LITTLE_ENDIAN
 139: #endif
 140: 
 141: #ifdef __MIPSEL__
 142: #define __IEEE_LITTLE_ENDIAN
 143: #endif
 144: #ifdef __MIPSEB__
 145: #define __IEEE_BIG_ENDIAN
 146: #endif
 147: 
 148: #ifdef __MMIX__
 149: #define __IEEE_BIG_ENDIAN
 150: #endif
 151: 
 152: #ifdef __D30V__
 153: #define __IEEE_BIG_ENDIAN
 154: #endif
 155: 
 156: /* necv70 was __IEEE_LITTLE_ENDIAN. */
 157: 
 158: #ifdef __W65__
 159: #define __IEEE_LITTLE_ENDIAN
 160: #define _DOUBLE_IS_32BITS
 161: #endif
 162: 
 163: #if defined(__Z8001__) || defined(__Z8002__)
 164: #define __IEEE_BIG_ENDIAN
 165: #endif
 166: 
 167: #ifdef __m88k__
 168: #define __IEEE_BIG_ENDIAN
 169: #endif
 170: 
 171: #ifdef __mn10300__
 172: #define __IEEE_LITTLE_ENDIAN
 173: #endif
 174: 
 175: #ifdef __mn10200__
 176: #define __IEEE_LITTLE_ENDIAN
 177: #define _DOUBLE_IS_32BITS
 178: #endif
 179: 
 180: #ifdef __v800
 181: #define __IEEE_LITTLE_ENDIAN
 182: #endif
 183: 
 184: #ifdef __v850
 185: #define __IEEE_LITTLE_ENDIAN
 186: #endif
 187: 
 188: #ifdef __D10V__
 189: #define __IEEE_BIG_ENDIAN
 190: #if __DOUBLE__ == 32
 191: #define _DOUBLE_IS_32BITS
 192: #endif
 193: #endif
 194: 
 195: #ifdef __PPC__
 196: #if (defined(_BIG_ENDIAN) && _BIG_ENDIAN) || (defined(_AIX) && _AIX)
 197: #define __IEEE_BIG_ENDIAN
 198: #else
 199: #if (defined(_LITTLE_ENDIAN) && _LITTLE_ENDIAN) || (defined(__sun__) && __sun__) || (defined(_WIN32) && _WIN32)
 200: #define __IEEE_LITTLE_ENDIAN
 201: #endif
 202: #endif
 203: #endif
 204: 
 205: #ifdef __xstormy16__
 206: #define __IEEE_LITTLE_ENDIAN
 207: #endif
 208: 
 209: #ifdef __arc__
 210: #ifdef __big_endian__
 211: #define __IEEE_BIG_ENDIAN
 212: #else
 213: #define __IEEE_LITTLE_ENDIAN
 214: #endif
 215: #endif
 216: 
 217: #ifdef __fr30__
 218: #define __IEEE_BIG_ENDIAN
 219: #endif
 220: 
 221: #ifdef __mcore__
 222: #define __IEEE_BIG_ENDIAN
 223: #endif
 224: 
 225: #ifdef __frv__
 226: #define __IEEE_BIG_ENDIAN
 227: #endif
 228: 
 229: #ifdef __ia64__
 230: #ifdef __BIG_ENDIAN__
 231: #define __IEEE_BIG_ENDIAN
 232: #else
 233: #define __IEEE_LITTLE_ENDIAN
 234: #endif
 235: #endif
 236: 
 237: #ifdef __AVR__
 238: #define __IEEE_LITTLE_ENDIAN
 239: #define _DOUBLE_IS_32BITS
 240: #endif
 241: 
 242: #if defined(__or32__) || defined(__or1k__) || defined(__or16__)
 243: #define __IEEE_BIG_ENDIAN
 244: #endif
 245: 
 246: #ifdef __IP2K__
 247: #define __IEEE_BIG_ENDIAN
 248: #define __SMALL_BITFIELDS
 249: #define _DOUBLE_IS_32BITS
 250: #endif
 251: 
 252: #ifdef __iq2000__
 253: #define __IEEE_BIG_ENDIAN
 254: #endif
 255: 
 256: #ifdef __MAVERICK__
 257: #ifdef __ARMEL__
 258: #  define __IEEE_LITTLE_ENDIAN
 259: #else  /* must be __ARMEB__ */
 260: #  define __IEEE_BIG_ENDIAN
 261: #endif /* __ARMEL__ */
 262: #endif /* __MAVERICK__ */
 263: 
 264: #ifndef __IEEE_BIG_ENDIAN
 265: #ifndef __IEEE_LITTLE_ENDIAN
 266: #error Endianess not declared!!
 267: #endif /* not __IEEE_LITTLE_ENDIAN */
 268: #endif /* not __IEEE_BIG_ENDIAN */
 269: 
 270: #endif /* not __IEEE_LITTLE_ENDIAN */
 271: #endif /* not __IEEE_BIG_ENDIAN */
 272: 
 273: