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sfp-machine.h revision 1.1.1.3 
      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_S		1
     21 #define _FP_NANSIGN_D		1
     22 #define _FP_NANSIGN_E		1
     23 #define _FP_NANSIGN_Q		1
     24 
     25 /* Here is something Intel misdesigned: the specs don't define
     26    the case where we have two NaNs with same mantissas, but
     27    different sign. Different operations pick up different NaNs.  */
     28 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)			\
     29   do {								\
     30     if (_FP_FRAC_GT_##wc(X, Y)					\
     31 	|| (_FP_FRAC_EQ_##wc(X,Y) && (OP == '+' || OP == '*')))	\
     32       {								\
     33 	R##_s = X##_s;						\
     34 	_FP_FRAC_COPY_##wc(R,X);				\
     35       }								\
     36     else							\
     37       {								\
     38 	R##_s = Y##_s;						\
     39 	_FP_FRAC_COPY_##wc(R,Y);				\
     40       }								\
     41     R##_c = FP_CLS_NAN;						\
     42   } while (0)
     43 
     44 #ifndef _SOFT_FLOAT
     45 #define FP_EX_INVALID		0x01
     46 #define FP_EX_DENORM		0x02
     47 #define FP_EX_DIVZERO		0x04
     48 #define FP_EX_OVERFLOW		0x08
     49 #define FP_EX_UNDERFLOW		0x10
     50 #define FP_EX_INEXACT		0x20
     51 #define FP_EX_ALL \
     52 	(FP_EX_INVALID | FP_EX_DENORM | FP_EX_DIVZERO | FP_EX_OVERFLOW \
     53 	 | FP_EX_UNDERFLOW | FP_EX_INEXACT)
     54 
     55 void __sfp_handle_exceptions (int);
     56 
     57 #define FP_HANDLE_EXCEPTIONS			\
     58   do {						\
     59     if (__builtin_expect (_fex, 0))		\
     60       __sfp_handle_exceptions (_fex);		\
     61   } while (0)
     62 
     63 #define FP_TRAPPING_EXCEPTIONS ((~_fcw >> FP_EX_SHIFT) & FP_EX_ALL)
     64 
     65 #define FP_ROUNDMODE		(_fcw & FP_RND_MASK)
     66 #endif
     67 
     68 #define _FP_TININESS_AFTER_ROUNDING 1
     69 
     70 #define	__LITTLE_ENDIAN	1234
     71 #define	__BIG_ENDIAN	4321
     72 
     73 #define __BYTE_ORDER __LITTLE_ENDIAN
     74 
     75 /* Define ALIASNAME as a strong alias for NAME.  */
     76 #if defined __MACH__
     77 /* Mach-O doesn't support aliasing.  If these functions ever return
     78    anything but CMPtype we need to revisit this... */
     79 #define strong_alias(name, aliasname) \
     80   CMPtype aliasname (TFtype a, TFtype b) { return name(a, b); }
     81 #else
     82 # define strong_alias(name, aliasname) _strong_alias(name, aliasname)
     83 # define _strong_alias(name, aliasname) \
     84   extern __typeof (name) aliasname __attribute__ ((alias (#name)));
     85 #endif
     86