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Diffstat (limited to 'Unix/i686-elf/include/machine/ieeefp.h')
| -rw-r--r-- | Unix/i686-elf/include/machine/ieeefp.h | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/Unix/i686-elf/include/machine/ieeefp.h b/Unix/i686-elf/include/machine/ieeefp.h new file mode 100644 index 0000000..9e5b5ae --- /dev/null +++ b/Unix/i686-elf/include/machine/ieeefp.h @@ -0,0 +1,298 @@ +#ifndef __IEEE_BIG_ENDIAN +#ifndef __IEEE_LITTLE_ENDIAN + +/* This file can define macros to choose variations of the IEEE float + format: + + _FLT_LARGEST_EXPONENT_IS_NORMAL + + Defined if the float format uses the largest exponent for finite + numbers rather than NaN and infinity representations. Such a + format cannot represent NaNs or infinities at all, but it's FLT_MAX + is twice the IEEE value. + + _FLT_NO_DENORMALS + + Defined if the float format does not support IEEE denormals. Every + float with a zero exponent is taken to be a zero representation. + + ??? At the moment, there are no equivalent macros above for doubles and + the macros are not fully supported by --enable-newlib-hw-fp. + + __IEEE_BIG_ENDIAN + + Defined if the float format is big endian. This is mutually exclusive + with __IEEE_LITTLE_ENDIAN. + + __IEEE_LITTLE_ENDIAN + + Defined if the float format is little endian. This is mutually exclusive + with __IEEE_BIG_ENDIAN. + + Note that one of __IEEE_BIG_ENDIAN or __IEEE_LITTLE_ENDIAN must be specified for a + platform or error will occur. + + __IEEE_BYTES_LITTLE_ENDIAN + + This flag is used in conjunction with __IEEE_BIG_ENDIAN to describe a situation + whereby multiple words of an IEEE floating point are in big endian order, but the + words themselves are little endian with respect to the bytes. + + _DOUBLE_IS_32_BITS + + This is used on platforms that support double by using the 32-bit IEEE + float type. + + _FLOAT_ARG + + This represents what type a float arg is passed as. It is used when the type is + not promoted to double. + +*/ + +#if (defined(__arm__) || defined(__thumb__)) && !defined(__MAVERICK__) +/* ARM traditionally used big-endian words; and within those words the + byte ordering was big or little endian depending upon the target. + Modern floating-point formats are naturally ordered; in this case + __VFP_FP__ will be defined, even if soft-float. */ +#ifdef __VFP_FP__ +# ifdef __ARMEL__ +# define __IEEE_LITTLE_ENDIAN +# else +# define __IEEE_BIG_ENDIAN +# endif +#else +# define __IEEE_BIG_ENDIAN +# ifdef __ARMEL__ +# define __IEEE_BYTES_LITTLE_ENDIAN +# endif +#endif +#endif + +#ifdef __hppa__ +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __SPU__ +#define __IEEE_BIG_ENDIAN +#endif + + +#ifdef __sparc__ +#ifdef __LITTLE_ENDIAN_DATA__ +#define __IEEE_LITTLE_ENDIAN +#else +#define __IEEE_BIG_ENDIAN +#endif +#endif + +#if defined(__m68k__) || defined(__mc68000__) +#define __IEEE_BIG_ENDIAN +#endif + +#if defined(__mc68hc11__) || defined(__mc68hc12__) || defined(__mc68hc1x__) +#define __IEEE_BIG_ENDIAN +#ifdef __HAVE_SHORT_DOUBLE__ +# define _DOUBLE_IS_32BITS +#endif +#endif + +#if defined (__H8300__) || defined (__H8300H__) || defined (__H8300S__) || defined (__H8500__) || defined (__H8300SX__) +#define __IEEE_BIG_ENDIAN +#define _FLOAT_ARG float +#define _DOUBLE_IS_32BITS +#endif + +#ifdef __sh__ +#ifdef __LITTLE_ENDIAN__ +#define __IEEE_LITTLE_ENDIAN +#else +#define __IEEE_BIG_ENDIAN +#endif +#if defined(__SH2E__) || defined(__SH3E__) || defined(__SH4_SINGLE_ONLY__) || defined(__SH2A_SINGLE_ONLY__) +#define _DOUBLE_IS_32BITS +#endif +#endif + +#ifdef _AM29K +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef _WIN32 +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __i386__ +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __i960__ +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __M32R__ +#define __IEEE_BIG_ENDIAN +#endif + +#if defined(_C4x) || defined(_C3x) +#define __IEEE_BIG_ENDIAN +#define _DOUBLE_IS_32BITS +#endif + +#ifdef __TIC80__ +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __MIPSEL__ +#define __IEEE_LITTLE_ENDIAN +#endif +#ifdef __MIPSEB__ +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __MMIX__ +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __D30V__ +#define __IEEE_BIG_ENDIAN +#endif + +/* necv70 was __IEEE_LITTLE_ENDIAN. */ + +#ifdef __W65__ +#define __IEEE_LITTLE_ENDIAN +#define _DOUBLE_IS_32BITS +#endif + +#if defined(__Z8001__) || defined(__Z8002__) +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __m88k__ +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __mn10300__ +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __mn10200__ +#define __IEEE_LITTLE_ENDIAN +#define _DOUBLE_IS_32BITS +#endif + +#ifdef __v800 +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __v850 +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __D10V__ +#define __IEEE_BIG_ENDIAN +#if __DOUBLE__ == 32 +#define _DOUBLE_IS_32BITS +#endif +#endif + +#ifdef __PPC__ +#if (defined(_BIG_ENDIAN) && _BIG_ENDIAN) || (defined(_AIX) && _AIX) +#define __IEEE_BIG_ENDIAN +#else +#if (defined(_LITTLE_ENDIAN) && _LITTLE_ENDIAN) || (defined(__sun__) && __sun__) || (defined(_WIN32) && _WIN32) +#define __IEEE_LITTLE_ENDIAN +#endif +#endif +#endif + +#ifdef __xstormy16__ +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __arc__ +#ifdef __big_endian__ +#define __IEEE_BIG_ENDIAN +#else +#define __IEEE_LITTLE_ENDIAN +#endif +#endif + +#ifdef __CRX__ +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __fr30__ +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __mcore__ +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __mt__ +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __frv__ +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __ia64__ +#ifdef __BIG_ENDIAN__ +#define __IEEE_BIG_ENDIAN +#else +#define __IEEE_LITTLE_ENDIAN +#endif +#endif + +#ifdef __AVR__ +#define __IEEE_LITTLE_ENDIAN +#define _DOUBLE_IS_32BITS +#endif + +#if defined(__or32__) || defined(__or1k__) || defined(__or16__) +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __IP2K__ +#define __IEEE_BIG_ENDIAN +#define __SMALL_BITFIELDS +#define _DOUBLE_IS_32BITS +#endif + +#ifdef __iq2000__ +#define __IEEE_BIG_ENDIAN +#endif + +#ifdef __MAVERICK__ +#ifdef __ARMEL__ +# define __IEEE_LITTLE_ENDIAN +#else /* must be __ARMEB__ */ +# define __IEEE_BIG_ENDIAN +#endif /* __ARMEL__ */ +#endif /* __MAVERICK__ */ + +#ifdef __m32c__ +#define __IEEE_LITTLE_ENDIAN +#define __SMALL_BITFIELDS +#endif + +#ifdef __CRIS__ +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifdef __BFIN__ +#define __IEEE_LITTLE_ENDIAN +#endif + +#ifndef __IEEE_BIG_ENDIAN +#ifndef __IEEE_LITTLE_ENDIAN +#error Endianess not declared!! +#endif /* not __IEEE_LITTLE_ENDIAN */ +#endif /* not __IEEE_BIG_ENDIAN */ + +#endif /* not __IEEE_LITTLE_ENDIAN */ +#endif /* not __IEEE_BIG_ENDIAN */ + |