63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
#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
|