mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-22 19:00:07 +00:00
bde40c2f9a
New macros. * sysdeps/x86_64/soft-fp/sfp-machine.h: Likewise. * soft-fp/soft-fp.h: Allow sfp-machine.h to define FP_RND_NEAREST without defining FP_ROUNDMODE.
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
#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_NANFRAC_Q _FP_QNANBIT_Q, 0, 0, 0
|
|
#define _FP_NANSIGN_S 1
|
|
#define _FP_NANSIGN_D 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 (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
|
|
|