Home | History | Annotate | Line # | Download | only in i386
sfp-machine.h revision 1.1.1.4 
      1 #ifdef __MINGW32__
      2   /* Make sure we are using gnu-style bitfield handling.  */
      3 #define _FP_STRUCT_LAYOUT  __attribute__ ((gcc_struct))
      4 #endif
      5 
      6 /* The type of the result of a floating point comparison.  This must
      7    match `__libgcc_cmp_return__' in GCC for the target.  */
      8 typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
      9 #define CMPtype __gcc_CMPtype
     10 
     11 #ifdef __x86_64__
     12 #include "config/i386/64/sfp-machine.h"
     13 #else
     14 #include "config/i386/32/sfp-machine.h"
     15 #endif
     16 
     17 #define _FP_KEEPNANFRACP	1
     18 #define _FP_QNANNEGATEDP 0
     19 
     20 #define _FP_NANSIGN_H		1
     21 #define _FP_NANSIGN_S		1
     22 #define _FP_NANSIGN_D		1
     23 #define _FP_NANSIGN_E		1
     24 #define _FP_NANSIGN_Q		1
     25 
     26 /* Here is something Intel misdesigned: the specs don't define
     27    the case where we have two NaNs with same mantissas, but
     28    different sign. Different operations pick up different NaNs.  */
     29 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)			\
     30   do {								\
     31     if (_FP_FRAC_GT_##wc(X, Y)					\
     32 	|| (_FP_FRAC_EQ_##wc(X,Y) && (OP == '+' || OP == '*')))	\
     33       {								\
     34 	R##_s = X##_s;						\
     35 	_FP_FRAC_COPY_##wc(R,X);				\
     36       }								\
     37     else							\
     38       {								\
     39 	R##_s = Y##_s;						\
     40 	_FP_FRAC_COPY_##wc(R,Y);				\
     41       }								\
     42     R##_c = FP_CLS_NAN;						\
     43   } while (0)
     44 
     45 #ifndef _SOFT_FLOAT
     46 #define FP_EX_INVALID		0x01
     47 #define FP_EX_DENORM		0x02
     48 #define FP_EX_DIVZERO		0x04
     49 #define FP_EX_OVERFLOW		0x08
     50 #define FP_EX_UNDERFLOW		0x10
     51 #define FP_EX_INEXACT		0x20
     52 #define FP_EX_ALL \
     53 	(FP_EX_INVALID | FP_EX_DENORM | FP_EX_DIVZERO | FP_EX_OVERFLOW \
     54 	 | FP_EX_UNDERFLOW | FP_EX_INEXACT)
     55 
     56 void __sfp_handle_exceptions (int);
     57 
     58 #define FP_HANDLE_EXCEPTIONS			\
     59   do {						\
     60     if (__builtin_expect (_fex, 0))		\
     61       __sfp_handle_exceptions (_fex);		\
     62   } while (0)
     63 
     64 #define FP_TRAPPING_EXCEPTIONS ((~_fcw >> FP_EX_SHIFT) & FP_EX_ALL)
     65 
     66 #define FP_ROUNDMODE		(_fcw & FP_RND_MASK)
     67 #endif
     68 
     69 #define _FP_TININESS_AFTER_ROUNDING 1
     70 
     71 #define	__LITTLE_ENDIAN	1234
     72 #define	__BIG_ENDIAN	4321
     73 
     74 #define __BYTE_ORDER __LITTLE_ENDIAN
     75 
     76 /* Define ALIASNAME as a strong alias for NAME.  */
     77 #if defined __APPLE__
     78 /* Mach-O doesn't support aliasing, so we build a secondary function for
     79    the alias - we need to do a bit of a dance to find out what the type of
     80    the arguments is and then apply that to the secondary function.
     81    If these functions ever return anything but CMPtype we need to revisit
     82    this... */
     83 typedef float alias_HFtype __attribute__ ((mode (HF)));
     84 typedef float alias_SFtype __attribute__ ((mode (SF)));
     85 typedef float alias_DFtype __attribute__ ((mode (DF)));
     86 typedef float alias_TFtype __attribute__ ((mode (TF)));
     87 #define ALIAS_SELECTOR \
     88   CMPtype (*) (alias_HFtype, alias_HFtype): (alias_HFtype) 0, \
     89   CMPtype (*) (alias_SFtype, alias_SFtype): (alias_SFtype) 0, \
     90   CMPtype (*) (alias_DFtype, alias_DFtype): (alias_DFtype) 0, \
     91   CMPtype (*) (alias_TFtype, alias_TFtype): (alias_TFtype) 0
     92 #define strong_alias(name, aliasname) \
     93   CMPtype aliasname (__typeof (_Generic (name, ALIAS_SELECTOR)) a, \
     94 		     __typeof (_Generic (name, ALIAS_SELECTOR)) b) \
     95 		    { return name (a, b); }
     96 #else
     97 # define strong_alias(name, aliasname) _strong_alias(name, aliasname)
     98 # define _strong_alias(name, aliasname) \
     99   extern __typeof (name) aliasname __attribute__ ((alias (#name)));
    100 #endif
    101