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Diffstat (limited to 'winsup/mingw/include/fenv.h')
| -rw-r--r-- | winsup/mingw/include/fenv.h | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/winsup/mingw/include/fenv.h b/winsup/mingw/include/fenv.h deleted file mode 100644 index ddae8921e..000000000 --- a/winsup/mingw/include/fenv.h +++ /dev/null @@ -1,107 +0,0 @@ -#ifndef _FENV_H_ -#define _FENV_H_ - -#include <_mingw.h> - -/* FPU status word exception flags */ -#define FE_INVALID 0x01 -#define FE_DENORMAL 0x02 -#define FE_DIVBYZERO 0x04 -#define FE_OVERFLOW 0x08 -#define FE_UNDERFLOW 0x10 -#define FE_INEXACT 0x20 -#define FE_ALL_EXCEPT (FE_INVALID | FE_DENORMAL | FE_DIVBYZERO \ - | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT) - -/* FPU control word rounding flags */ -#define FE_TONEAREST 0x0000 -#define FE_DOWNWARD 0x0400 -#define FE_UPWARD 0x0800 -#define FE_TOWARDZERO 0x0c00 - -/* The MXCSR exception flags are the same as the - FE flags. */ -#define __MXCSR_EXCEPT_FLAG_SHIFT 0 - -/* How much to shift FE status word exception flags - to get the MXCSR exeptions masks, */ -#define __MXCSR_EXCEPT_MASK_SHIFT 7 - -/* How much to shift FE control word rounding flags - to get MXCSR rounding flags, */ -#define __MXCSR_ROUND_FLAG_SHIFT 3 - -#ifndef RC_INVOKED -/* - For now, support only for the basic abstraction of flags that are - either set or clear. fexcept_t could be structure that holds more - info about the fp environment. -*/ -typedef unsigned short fexcept_t; - -/* This 32-byte struct represents the entire floating point - environment as stored by fnstenv or fstenv, augmented by - the contents of the MXCSR register, as stored by stmxcsr - (if CPU supports it). */ -typedef struct -{ - unsigned short __control_word; - unsigned short __unused0; - unsigned short __status_word; - unsigned short __unused1; - unsigned short __tag_word; - unsigned short __unused2; - unsigned int __ip_offset; /* instruction pointer offset */ - unsigned short __ip_selector; - unsigned short __opcode; - unsigned int __data_offset; - unsigned short __data_selector; - unsigned short __unused3; - unsigned int __mxcsr; /* contents of the MXCSR register */ -} fenv_t; - - -/*The C99 standard (7.6.9) allows us to define implementation-specific macros for - different fp environments */ - -/* The default Intel x87 floating point environment (64-bit mantissa) */ -#define FE_PC64_ENV ((const fenv_t *)-1) - -/* The floating point environment set by MSVCRT _fpreset (53-bit mantissa) */ -#define FE_PC53_ENV ((const fenv_t *)-2) - -/* The FE_DFL_ENV macro is required by standard. - fesetenv will use the environment set at app startup.*/ -#define FE_DFL_ENV ((const fenv_t *) 0) - -#ifdef __cplusplus -extern "C" { -#endif - -/*TODO: Some of these could be inlined */ -/* 7.6.2 Exception */ - -extern int __cdecl __MINGW_NOTHROW feclearexcept (int); -extern int __cdecl __MINGW_NOTHROW fegetexceptflag (fexcept_t * flagp, int excepts); -extern int __cdecl __MINGW_NOTHROW feraiseexcept (int excepts ); -extern int __cdecl __MINGW_NOTHROW fesetexceptflag (const fexcept_t *, int); -extern int __cdecl __MINGW_NOTHROW fetestexcept (int excepts); - -/* 7.6.3 Rounding */ - -extern int __cdecl __MINGW_NOTHROW fegetround (void); -extern int __cdecl __MINGW_NOTHROW fesetround (int mode); - -/* 7.6.4 Environment */ - -extern int __cdecl __MINGW_NOTHROW fegetenv (fenv_t * envp); -extern int __cdecl __MINGW_NOTHROW fesetenv (const fenv_t * ); -extern int __cdecl __MINGW_NOTHROW feupdateenv (const fenv_t *); -extern int __cdecl __MINGW_NOTHROW feholdexcept (fenv_t *); - -#ifdef __cplusplus -} -#endif -#endif /* Not RC_INVOKED */ - -#endif /* ndef _FENV_H */ |