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/* $NetBSD: ieeefp.h,v 1.1 2001/01/10 19:02:06 bjh21 Exp $ */
/* $FreeBSD$ */
/*-
* Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995
* Public domain.
*/
#ifndef _MACHINE_IEEEFP_H_
#define _MACHINE_IEEEFP_H_
/* Deprecated historical FPU control interface */
/* FP exception codes */
#define FP_EXCEPT_INV 0
#define FP_EXCEPT_DZ 1
#define FP_EXCEPT_OFL 2
#define FP_EXCEPT_UFL 3
#define FP_EXCEPT_IMP 4
/* Exception type (used by fpsetmask() et al.) */
typedef int fp_except;
/* Bit defines for fp_except */
#define FP_X_INV (1 << FP_EXCEPT_INV) /* invalid operation exception */
#define FP_X_DZ (1 << FP_EXCEPT_DZ) /* divide-by-zero exception */
#define FP_X_OFL (1 << FP_EXCEPT_OFL) /* overflow exception */
#define FP_X_UFL (1 << FP_EXCEPT_UFL) /* underflow exception */
#define FP_X_IMP (1 << FP_EXCEPT_IMP) /* imprecise (loss of precision; "inexact") */
/* Rounding modes */
typedef enum {
FP_RN=0, /* round to nearest representable number */
FP_RP=1, /* round toward positive infinity */
FP_RM=2, /* round toward negative infinity */
FP_RZ=3 /* round to zero (truncate) */
} fp_rnd_t;
/*
* FP precision modes
*/
typedef enum {
FP_PS=0, /* 24 bit (single-precision) */
FP_PRS, /* reserved */
FP_PD, /* 53 bit (double-precision) */
FP_PE /* 64 bit (extended-precision) */
} fp_prec_t;
#define fp_except_t int
#endif /* _MACHINE_IEEEFP_H_ */
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