openlibm_fenv_riscv.h File Reference

#include <stdint.h>
#include "../inc/cdefs-compat.h"

Macros
#define	__fenv_static   static
#define	FE_INVALID   0x0010
#define	FE_DIVBYZERO   0x0008
#define	FE_OVERFLOW   0x0004
#define	FE_UNDERFLOW   0x0002
#define	FE_INEXACT   0x0001
#define	FE_ALL_EXCEPT
#define	_ROUND_SHIFT   5
#define	FE_TONEAREST   (0x00 << _ROUND_SHIFT)
#define	FE_TOWARDZERO   (0x01 << _ROUND_SHIFT)
#define	FE_DOWNWARD   (0x02 << _ROUND_SHIFT)
#define	FE_UPWARD   (0x03 << _ROUND_SHIFT)
#define	_ROUND_MASK
#define	FE_DFL_ENV   (&__fe_dfl_env)
#define	__rfs(__fcsr)   __asm __volatile("csrr %0, fcsr" : "=r" (__fcsr))
#define	__wfs(__fcsr)   __asm __volatile("csrw fcsr, %0" :: "r" (__fcsr))

Typedefs
typedef __uint64_t	fenv_t
typedef __uint64_t	fexcept_t

Functions
__fenv_static int	feclearexcept (int __excepts)
__fenv_static int	fegetexceptflag (fexcept_t *__flagp, int __excepts)
__fenv_static int	fesetexceptflag (const fexcept_t *__flagp, int __excepts)
__fenv_static int	feraiseexcept (int __excepts)
__fenv_static int	fetestexcept (int __excepts)
__fenv_static int	fegetround (void)
__fenv_static int	fesetround (int __round)
__fenv_static int	fegetenv (fenv_t *__envp)
__fenv_static int	feholdexcept (fenv_t *__envp)
__fenv_static int	fesetenv (const fenv_t *__envp)
__fenv_static int	feupdateenv (const fenv_t *__envp)

Variables
__BEGIN_DECLS const fenv_t	__fe_dfl_env

Macro Definition Documentation

__fenv_static

#define __fenv_static   static

__rfs

#define __rfs

(

__fcsr

)

__asm __volatile("csrr %0, fcsr" : "=r" (__fcsr))

__wfs

#define __wfs

(

__fcsr

)

__asm __volatile("csrw fcsr, %0" :: "r" (__fcsr))

_ROUND_MASK

#define _ROUND_MASK

Value:

             (FE_TONEAREST | FE_DOWNWARD | \
             FE_UPWARD | FE_TOWARDZERO)

_ROUND_SHIFT

#define _ROUND_SHIFT   5

FE_ALL_EXCEPT

#define FE_ALL_EXCEPT

Value:

             (FE_DIVBYZERO | FE_INEXACT | \
             FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)

FE_DFL_ENV

#define FE_DFL_ENV   (&__fe_dfl_env)

FE_DIVBYZERO

#define FE_DIVBYZERO   0x0008

FE_DOWNWARD

#define FE_DOWNWARD   (0x02 << _ROUND_SHIFT)

FE_INEXACT

#define FE_INEXACT   0x0001

FE_INVALID

#define FE_INVALID   0x0010

FE_OVERFLOW

#define FE_OVERFLOW   0x0004

FE_TONEAREST

#define FE_TONEAREST   (0x00 << _ROUND_SHIFT)

FE_TOWARDZERO

#define FE_TOWARDZERO   (0x01 << _ROUND_SHIFT)

FE_UNDERFLOW

#define FE_UNDERFLOW   0x0002

FE_UPWARD

#define FE_UPWARD   (0x03 << _ROUND_SHIFT)

Typedef Documentation

fenv_t

typedef __uint64_t fenv_t

fexcept_t

typedef __uint64_t fexcept_t

Function Documentation

feclearexcept()

__fenv_static int feclearexcept ( int  __excepts )

inline

fegetenv()

__fenv_static int fegetenv ( fenv_t *  __envp )

inline

fegetexceptflag()

__fenv_static int fegetexceptflag ( fexcept_t *  __flagp, int  __excepts  )

inline

fegetround()

__fenv_static int fegetround ( void  )

inline

feholdexcept()

__fenv_static int feholdexcept ( fenv_t *  __envp )

inline

feraiseexcept()

__fenv_static int feraiseexcept ( int  __excepts )

inline

fesetenv()

__fenv_static int fesetenv ( const fenv_t *  __envp )

inline

fesetexceptflag()

__fenv_static int fesetexceptflag ( const fexcept_t *  __flagp, int  __excepts  )

inline

fesetround()

__fenv_static int fesetround ( int  __round )

inline

fetestexcept()

__fenv_static int fetestexcept ( int  __excepts )

inline

feupdateenv()

__fenv_static int feupdateenv ( const fenv_t *  __envp )

inline

Variable Documentation

__fe_dfl_env

__BEGIN_DECLS const fenv_t __fe_dfl_env

extern