diff options
Diffstat (limited to 'sysdeps/x86_64/soft-fp')
| -rw-r--r-- | sysdeps/x86_64/soft-fp/sfp-machine.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/x86_64/soft-fp/sfp-machine.h b/sysdeps/x86_64/soft-fp/sfp-machine.h new file mode 100644 index 0000000000..1cc4e24c68 --- /dev/null +++ b/sysdeps/x86_64/soft-fp/sfp-machine.h @@ -0,0 +1,49 @@ +#define _FP_W_TYPE_SIZE 64 +#define _FP_W_TYPE unsigned long +#define _FP_WS_TYPE signed long +#define _FP_I_TYPE long + +#define __FP_CLZ(r, x) \ + do { \ + __asm__("bsrq %1,%0" : "=r"(r) : "g"(x) : "cc"); \ + r ^= 63; \ + } while (0) + +#define _FP_NANFRAC_S _FP_QNANBIT_S +#define _FP_NANFRAC_D _FP_QNANBIT_D, 0 +#define _FP_NANSIGN_S 1 +#define _FP_NANSIGN_D 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 (1 << 0) +#define FP_EX_DENORM (1 << 1) +#define FP_EX_DIVZERO (1 << 2) +#define FP_EX_OVERFLOW (1 << 3) +#define FP_EX_UNDERFLOW (1 << 4) +#define FP_EX_INEXACT (1 << 5) + +#define FP_RND_NEAREST 0 +#define FP_RND_ZERO 3 +#define FP_RND_PINF 2 +#define FP_RND_MINF 1 + |