projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 3352b62b N |
1 | /* $NetBSD: fenv.h,v 1.2 2014/01/29 00:22:09 matt Exp $ */\r |
| 2 | /** @file\r | |
| 3 | *\r | |
| 4 | * Copyright (c) 2013 - 2014, ARM Limited. All rights reserved.\r | |
| 5 | *\r | |
| 6 | * This program and the accompanying materials\r | |
| 7 | * are licensed and made available under the terms and conditions of the BSD License\r | |
| 8 | * which accompanies this distribution. The full text of the license may be found at\r | |
| 9 | * http://opensource.org/licenses/bsd-license.php\r | |
| 10 | *\r | |
| 11 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 12 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 13 | *\r | |
| 14 | **/\r | |
| 15 | /*\r | |
| 16 | * Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995\r | |
| 17 | * Public domain.\r | |
| 18 | */\r | |
| 19 | \r | |
| 20 | #ifndef _ARM_FENV_H_\r | |
| 21 | #define _ARM_FENV_H_\r | |
| 22 | \r | |
| 23 | #ifdef __ARM_PCS_AAPCS64\r | |
| 24 | /* AArch64 split FPSCR into two registers FPCR and FPSR */\r | |
| 25 | typedef struct {\r | |
| 26 | unsigned int __fpcr;\r | |
| 27 | unsigned int __fpsr;\r | |
| 28 | } fenv_t;\r | |
| 29 | #else\r | |
| 30 | typedef int fenv_t; /* FPSCR */\r | |
| 31 | #endif\r | |
| 32 | typedef int fexcept_t;\r | |
| 33 | \r | |
| 34 | #define FE_INVALID 0x01 /* invalid operation exception */\r | |
| 35 | #define FE_DIVBYZERO 0x02 /* divide-by-zero exception */\r | |
| 36 | #define FE_OVERFLOW 0x04 /* overflow exception */\r | |
| 37 | #define FE_UNDERFLOW 0x08 /* underflow exception */\r | |
| 38 | #define FE_INEXACT 0x10 /* imprecise (loss of precision; "inexact") */\r | |
| 39 | \r | |
| 40 | #define FE_ALL_EXCEPT 0x1f\r | |
| 41 | \r | |
| 42 | #define FE_TONEAREST 0 /* round to nearest representable number */\r | |
| 43 | #define FE_UPWARD 1 /* round toward positive infinity */\r | |
| 44 | #define FE_DOWNWARD 2 /* round toward negative infinity */\r | |
| 45 | #define FE_TOWARDZERO 3 /* round to zero (truncate) */\r | |
| 46 | \r | |
| 47 | __BEGIN_DECLS\r | |
| 48 | \r | |
| 49 | /* Default floating-point environment */\r | |
| 50 | extern const fenv_t __fe_dfl_env;\r | |
| 51 | #define FE_DFL_ENV (&__fe_dfl_env)\r | |
| 52 | \r | |
| 53 | __END_DECLS\r | |
| 54 | \r | |
| 55 | #endif /* _ARM_FENV_H_ */\r |