/*
 * Copyright (c) 2005-2019 Rich Felker, et al.
 *
 * Part of MUSL, released under the MIT license.
 */


#ifndef _FENV_H_
#define _FENV_H_

#ifdef __cplusplus
extern "C" {
#endif

#if __HAVE_68881__ || __mcffpu__

#define FE_INEXACT    8
#define FE_DIVBYZERO  16
#define FE_UNDERFLOW  32
#define FE_OVERFLOW   64
#define FE_INVALID    128

#define FE_ALL_EXCEPT 0xf8

#define FE_TONEAREST  0
#define FE_TOWARDZERO 16
#define FE_DOWNWARD   32
#define FE_UPWARD     48

#else

#define FE_ALL_EXCEPT 0
#define FE_TONEAREST  0

#endif

typedef unsigned fexcept_t;

typedef struct {
	unsigned __control_register, __status_register, __instruction_address;
} fenv_t;

#define FE_DFL_ENV      ((const fenv_t *) -1)

int feclearexcept(int);
int fegetexceptflag(fexcept_t *, int);
int feraiseexcept(int);
int fesetexceptflag(const fexcept_t *, int);
int fetestexcept(int);

int fegetround(void);
int fesetround(int);

int fegetenv(fenv_t *);
int feholdexcept(fenv_t *);
int fesetenv(const fenv_t *);
int feupdateenv(const fenv_t *);

#ifdef __cplusplus
}
#endif
#endif