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_ */ 47