| #define _FP_W_TYPE_SIZE 64 |
| #define _FP_W_TYPE unsigned long |
| #define _FP_WS_TYPE signed long |
| #define _FP_I_TYPE long |
| |
| typedef int TItype __attribute__ ((mode (TI))); |
| typedef unsigned int UTItype __attribute__ ((mode (TI))); |
| |
| #define TI_BITS (__CHAR_BIT__ * (int)sizeof(TItype)) |
| |
| /* The type of the result of a floating point comparison. This must |
| match `__libgcc_cmp_return__' in GCC for the target. */ |
| #define CMPtype long |
| |
| #define _FP_MUL_MEAT_Q(R,X,Y) \ |
| _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) |
| |
| #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) |
| |
| #define _FP_NANFRAC_S _FP_QNANBIT_S |
| #define _FP_NANFRAC_D _FP_QNANBIT_D |
| #define _FP_NANFRAC_E _FP_QNANBIT_E, 0 |
| #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0 |
| #define _FP_NANSIGN_S 1 |
| #define _FP_NANSIGN_D 1 |
| #define _FP_NANSIGN_E 1 |
| #define _FP_NANSIGN_Q 1 |
| |
| #define _FP_KEEPNANFRACP 1 |
| |
| /* Here is something Intel misdesigned: the specs don't define |
| the case where we have two NaNs with same mantissas, but |
| different sign. Different operations pick up different NaNs. */ |
| #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ |
| do { \ |
| if (_FP_FRAC_GT_##wc(X, Y) \ |
| || (_FP_FRAC_EQ_##wc(X,Y) && (OP == '+' || OP == '*'))) \ |
| { \ |
| R##_s = X##_s; \ |
| _FP_FRAC_COPY_##wc(R,X); \ |
| } \ |
| else \ |
| { \ |
| R##_s = Y##_s; \ |
| _FP_FRAC_COPY_##wc(R,Y); \ |
| } \ |
| R##_c = FP_CLS_NAN; \ |
| } while (0) |
| |
| #define FP_EX_INVALID 0x01 |
| #define FP_EX_DENORM 0x02 |
| #define FP_EX_DIVZERO 0x04 |
| #define FP_EX_OVERFLOW 0x08 |
| #define FP_EX_UNDERFLOW 0x10 |
| #define FP_EX_INEXACT 0x20 |
| |
| struct fenv |
| { |
| unsigned short int __control_word; |
| unsigned short int __unused1; |
| unsigned short int __status_word; |
| unsigned short int __unused2; |
| unsigned short int __tags; |
| unsigned short int __unused3; |
| unsigned int __eip; |
| unsigned short int __cs_selector; |
| unsigned int __opcode:11; |
| unsigned int __unused4:5; |
| unsigned int __data_offset; |
| unsigned short int __data_selector; |
| unsigned short int __unused5; |
| }; |
| |
| #define FP_HANDLE_EXCEPTIONS \ |
| do { \ |
| if (_fex & FP_EX_INVALID) \ |
| { \ |
| float f = 0.0; \ |
| __asm__ __volatile__ ("divss %0, %0 " : : "x" (f)); \ |
| } \ |
| if (_fex & FP_EX_DIVZERO) \ |
| { \ |
| float f = 1.0, g = 0.0; \ |
| __asm__ __volatile__ ("divss %1, %0" : : "x" (f), "x" (g)); \ |
| } \ |
| if (_fex & FP_EX_OVERFLOW) \ |
| { \ |
| struct fenv temp; \ |
| __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \ |
| temp.__status_word |= FP_EX_OVERFLOW; \ |
| __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \ |
| __asm__ __volatile__ ("fwait"); \ |
| } \ |
| if (_fex & FP_EX_UNDERFLOW) \ |
| { \ |
| struct fenv temp; \ |
| __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \ |
| temp.__status_word |= FP_EX_UNDERFLOW; \ |
| __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \ |
| __asm__ __volatile__ ("fwait"); \ |
| } \ |
| if (_fex & FP_EX_INEXACT) \ |
| { \ |
| struct fenv temp; \ |
| __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \ |
| temp.__status_word |= FP_EX_INEXACT; \ |
| __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \ |
| __asm__ __volatile__ ("fwait"); \ |
| } \ |
| } while (0) |
| |
| #define FP_RND_NEAREST 0 |
| #define FP_RND_ZERO 0xc00 |
| #define FP_RND_PINF 0x800 |
| #define FP_RND_MINF 0x400 |
| |
| #define _FP_DECL_EX \ |
| unsigned short _fcw __attribute__ ((unused)) = FP_RND_NEAREST |
| |
| #define FP_INIT_ROUNDMODE \ |
| do { \ |
| __asm__ ("fnstcw %0" : "=m" (_fcw)); \ |
| } while (0) |
| |
| #define FP_ROUNDMODE (_fcw & 0xc00) |
| |
| #define __LITTLE_ENDIAN 1234 |
| #define __BIG_ENDIAN 4321 |
| |
| #define __BYTE_ORDER __LITTLE_ENDIAN |
| |
| /* Define ALIASNAME as a strong alias for NAME. */ |
| #if defined __MACH__ |
| /* Mach-O doesn't support aliasing. If these functions ever return |
| anything but CMPtype we need to revisit this... */ |
| #define strong_alias(name, aliasname) \ |
| CMPtype aliasname (TFtype a, TFtype b) { return name(a, b); } |
| #else |
| # define strong_alias(name, aliasname) _strong_alias(name, aliasname) |
| # define _strong_alias(name, aliasname) \ |
| extern __typeof (name) aliasname __attribute__ ((alias (#name))); |
| #endif |