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 11 typedef 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 18 typedef 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