| 1 | /* $NetBSD: fenv.h,v 1.5 2024/05/12 20:04:12 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995 |
| 5 | * Public domain. |
| 6 | */ |
| 7 | |
| 8 | #ifndef _RISCV_FENV_H_ |
| 9 | #define _RISCV_FENV_H_ |
| 10 | |
| 11 | typedef int fenv_t; /* FPSCR */ |
| 12 | typedef int fexcept_t; |
| 13 | |
| 14 | #define FE_INEXACT ((int)__BIT(0)) /* Result inexact */ |
| 15 | #define FE_UNDERFLOW ((int)__BIT(1)) /* Result underflowed */ |
| 16 | #define FE_OVERFLOW ((int)__BIT(2)) /* Result overflowed */ |
| 17 | #define FE_DIVBYZERO ((int)__BIT(3)) /* divide-by-zero */ |
| 18 | #define FE_INVALID ((int)__BIT(4)) /* Result invalid */ |
| 19 | |
| 20 | #define FE_ALL_EXCEPT \ |
| 21 | (FE_INEXACT | FE_UNDERFLOW | FE_OVERFLOW | FE_DIVBYZERO | FE_INVALID) |
| 22 | |
| 23 | #define FE_TONEAREST 0 /* round to nearest representable number */ |
| 24 | #define FE_TOWARDZERO 1 /* round to zero (truncate) */ |
| 25 | #define FE_DOWNWARD 2 /* round toward negative infinity */ |
| 26 | #define FE_UPWARD 3 /* round toward positive infinity */ |
| 27 | |
| 28 | __BEGIN_DECLS |
| 29 | |
| 30 | /* Default floating-point environment */ |
| 31 | extern const fenv_t __fe_dfl_env; |
| 32 | #define FE_DFL_ENV (&__fe_dfl_env) |
| 33 | |
| 34 | __END_DECLS |
| 35 | |
| 36 | #endif /* _RISCV_FENV_H_ */ |