2005-01-07 02:29:27 +00:00
|
|
|
/* -
|
2002-05-13 07:44:48 +00:00
|
|
|
* Written by J.T. Conklin, Apr 6, 1995
|
|
|
|
|
* Public domain.
|
|
|
|
|
* $NetBSD: ieeefp.h,v 1.2 1999/07/07 01:52:26 danw Exp $
|
|
|
|
|
* $FreeBSD$
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef _MACHINE_IEEEFP_H_
|
|
|
|
|
#define _MACHINE_IEEEFP_H_
|
|
|
|
|
|
2011-10-21 06:41:46 +00:00
|
|
|
/* Deprecated historical FPU control interface */
|
|
|
|
|
|
2002-05-13 07:44:48 +00:00
|
|
|
typedef int fp_except_t;
|
|
|
|
|
#define FP_X_IMP 0x01 /* imprecise (loss of precision) */
|
|
|
|
|
#define FP_X_DZ 0x02 /* divide-by-zero exception */
|
|
|
|
|
#define FP_X_UFL 0x04 /* underflow exception */
|
|
|
|
|
#define FP_X_OFL 0x08 /* overflow exception */
|
|
|
|
|
#define FP_X_INV 0x10 /* invalid operation exception */
|
|
|
|
|
|
|
|
|
|
typedef enum {
|
|
|
|
|
FP_RN=0, /* round to nearest representable number */
|
|
|
|
|
FP_RZ=1, /* round to zero (truncate) */
|
|
|
|
|
FP_RP=2, /* round toward positive infinity */
|
|
|
|
|
FP_RM=3 /* round toward negative infinity */
|
|
|
|
|
} fp_rnd_t;
|
|
|
|
|
|
2011-10-21 06:41:46 +00:00
|
|
|
__BEGIN_DECLS
|
|
|
|
|
extern fp_rnd_t fpgetround(void);
|
|
|
|
|
extern fp_rnd_t fpsetround(fp_rnd_t);
|
|
|
|
|
extern fp_except_t fpgetmask(void);
|
|
|
|
|
extern fp_except_t fpsetmask(fp_except_t);
|
|
|
|
|
extern fp_except_t fpgetsticky(void);
|
|
|
|
|
__END_DECLS
|
|
|
|
|
|
2002-05-13 07:44:48 +00:00
|
|
|
#endif /* _MACHINE_IEEEFP_H_ */
|
