| /* libquadmath uses soft-fp only for sqrtq and only for |
| the positive finite case, so it doesn't care about |
| NaN representation, nor tininess after rounding vs. |
| before rounding, all it cares about is current rounding |
| mode and raising inexact exceptions. */ |
| #if __SIZEOF_LONG__ == 8 |
| #define _FP_W_TYPE_SIZE 64 |
| #define _FP_I_TYPE long long |
| #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0 |
| #else |
| #define _FP_W_TYPE_SIZE 32 |
| #define _FP_I_TYPE int |
| #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0, 0, 0 |
| #endif |
| #define _FP_W_TYPE unsigned _FP_I_TYPE |
| #define _FP_WS_TYPE signed _FP_I_TYPE |
| #define _FP_QNANNEGATEDP 0 |
| #define _FP_NANSIGN_Q 1 |
| #define _FP_KEEPNANFRACP 1 |
| #define _FP_TININESS_AFTER_ROUNDING 0 |
| #ifndef __BYTE_ORDER |
| #define __LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__ |
| #define __BIG_ENDIAN __ORDER_BIG_ENDIAN__ |
| #define __BYTE_ORDER __BYTE_ORDER__ |
| #endif |
| #define _FP_DECL_EX \ |
| unsigned int fp_roundmode __attribute__ ((unused)) = FP_RND_NEAREST; |
| #define FP_ROUNDMODE fp_roundmode |
| #define FP_INIT_ROUNDMODE \ |
| do \ |
| { \ |
| switch (fegetround ()) \ |
| { \ |
| case FE_UPWARD: \ |
| fp_roundmode = FP_RND_PINF; \ |
| break; \ |
| case FE_DOWNWARD: \ |
| fp_roundmode = FP_RND_MINF; \ |
| break; \ |
| case FE_TOWARDZERO: \ |
| fp_roundmode = FP_RND_ZERO; \ |
| break; \ |
| default: \ |
| break; \ |
| } \ |
| } \ |
| while (0) |
| #define FP_HANDLE_EXCEPTIONS \ |
| do \ |
| { \ |
| if (_fex & FP_EX_INEXACT) \ |
| { \ |
| volatile double eight = 8.0; \ |
| volatile double eps \ |
| = DBL_EPSILON; \ |
| eight += eps; \ |
| } \ |
| } \ |
| while (0) |
