#ifndef _FENV_H

#include <math/fenv.h>

#ifndef _ISOMAC

# include <stdbool.h>

/* Now define the internal interfaces.  */

extern int __feclearexcept (int __excepts);

extern int __fegetexcept (void);

extern int __fegetexceptflag (fexcept_t *__flagp, int __excepts);

extern int __feraiseexcept (int __excepts);

extern int __fesetexceptflag (const fexcept_t *__flagp, int __excepts);

extern int __fegetenv (fenv_t *__envp);

extern int __fesetenv (const fenv_t *__envp);

extern int __feupdateenv (const fenv_t *__envp);

extern __typeof (fegetround) __fegetround __attribute_pure__;

extern __typeof (feholdexcept) __feholdexcept;

extern __typeof (fesetround) __fesetround;

libm_hidden_proto (feraiseexcept)

libm_hidden_proto (__feraiseexcept)

libm_hidden_proto (fegetenv)

libm_hidden_proto (__fegetenv)

libm_hidden_proto (fegetround)

libm_hidden_proto (__fegetround)

libm_hidden_proto (fesetenv)

libm_hidden_proto (__fesetenv)

libm_hidden_proto (fesetround)

libm_hidden_proto (__fesetround)

libm_hidden_proto (feholdexcept)

libm_hidden_proto (__feholdexcept)

libm_hidden_proto (feupdateenv)

libm_hidden_proto (__feupdateenv)

libm_hidden_proto (fetestexcept)

libm_hidden_proto (feclearexcept)

/* Rounding mode context.  This allows functions to set/restore rounding mode

   only when the desired rounding mode is different from the current rounding

   mode.  */

struct rm_ctx

{

  fenv_t env;

  bool updated_status;

};

/* Track whether rounding mode macros were defined, since

   get-rounding-mode.h may define default versions if they weren't.

   FE_TONEAREST must always be defined (even if no changes of rounding

   mode are supported, glibc requires it to be defined to represent

   the default rounding mode).  */

# ifndef FE_TONEAREST

#  error "FE_TONEAREST not defined"

# endif

# if defined FE_DOWNWARD || defined FE_TOWARDZERO || defined FE_UPWARD

#  define FE_HAVE_ROUNDING_MODES 1

# else

#  define FE_HAVE_ROUNDING_MODES 0

# endif

#endif

#endif