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Add the <fenv.h> header.

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This commit is contained in:
Stephen Heumann 2021-03-06 16:31:52 -06:00
parent f368071146
commit 2630b51b74
1 changed files with 45 additions and 0 deletions
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45
ORCACDefs/fenv.h Normal file
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/****************************************************************
*
* fenv.h - floating-point environment access
*
* February 2021
* Stephen Heumann
*
****************************************************************/
#ifndef __fenv__
#define __fenv__
typedef unsigned short fenv_t;
typedef unsigned short fexcept_t;
/* Floating-point exceptions */
#define FE_INVALID 0x01
#define FE_UNDERFLOW 0x02
#define FE_OVERFLOW 0x04
#define FE_DIVBYZERO 0x08
#define FE_INEXACT 0x10
#define FE_ALL_EXCEPT 0x1F
/* Rounding directions */
#define FE_DOWNWARD 0x80
#define FE_TONEAREST 0x00
#define FE_TOWARDZERO 0xC0
#define FE_UPWARD 0x40
extern const fenv_t __FE_DFL_ENV;
#define FE_DFL_ENV (&__FE_DFL_ENV)
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 *);
#endif