1/* $OpenBSD: ieeefp.h,v 1.4 2011/03/23 16:54:36 pirofti Exp $ */
2
3/*
4 * Written by J.T. Conklin, Apr 11, 1995
5 * Public domain.
6 */
7
8#ifndef _MIPS64_IEEEFP_H_
9#define _MIPS64_IEEEFP_H_
10
11typedef int fp_except;
12#define FP_X_IMP 0x01 /* imprecise (loss of precision) */
13#define FP_X_UFL 0x02 /* underflow exception */
14#define FP_X_OFL 0x04 /* overflow exception */
15#define FP_X_DZ 0x08 /* divide-by-zero exception */
16#define FP_X_INV 0x10 /* invalid operation exception */
17
18typedef enum {
19 FP_RN=0, /* round to nearest representable number */
20 FP_RZ=1, /* round to zero (truncate) */
21 FP_RP=2, /* round toward positive infinity */
22 FP_RM=3 /* round toward negative infinity */
23} fp_rnd;
24
25#ifdef _KERNEL
26
27/*
28 * Defines for the floating-point completion/emulation code.
29 */
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/proc.h>
34#include <machine/fpu.h>
35
36#define float_raise(bits) \
37 do { curproc->p_md.md_regs->fsr |= (bits) << FPCSR_C_SHIFT; } while (0)
38#define float_set_inexact() float_raise(FP_X_IMP)
39#define float_set_invalid() float_raise(FP_X_INV)
40
41#define float_get_round(csr) (csr & FPCSR_RM_MASK)
42#define fpgetround() float_get_round(curproc->p_md.md_regs->fsr)
43
44#endif
45
46#endif /* !_MIPS64_IEEEFP_H_ */