| /* Machine-dependent software floating-point definitions. | |
| Alpha kernel version. | |
| Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. | |
| This file is part of the GNU C Library. | |
| Contributed by Richard Henderson (rth@cygnus.com), | |
| Jakub Jelinek (jakub@redhat.com) and | |
| David S. Miller (davem@redhat.com). | |
| The GNU C Library is free software; you can redistribute it and/or | |
| modify it under the terms of the GNU Library General Public License as | |
| published by the Free Software Foundation; either version 2 of the | |
| License, or (at your option) any later version. | |
| The GNU C Library is distributed in the hope that it will be useful, | |
| but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| Library General Public License for more details. | |
| You should have received a copy of the GNU Library General Public | |
| License along with the GNU C Library; see the file COPYING.LIB. If | |
| not, write to the Free Software Foundation, Inc., | |
| 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
| #ifndef _SFP_MACHINE_H | |
| #define _SFP_MACHINE_H | |
| #define _FP_W_TYPE_SIZE 64 | |
| #define _FP_W_TYPE unsigned long | |
| #define _FP_WS_TYPE signed long | |
| #define _FP_I_TYPE long | |
| #define _FP_MUL_MEAT_S(R,X,Y) \ | |
| _FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y) | |
| #define _FP_MUL_MEAT_D(R,X,Y) \ | |
| _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) | |
| #define _FP_MUL_MEAT_Q(R,X,Y) \ | |
| _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) | |
| #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm) | |
| #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv(D,R,X,Y) | |
| #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) | |
| #define _FP_NANFRAC_S _FP_QNANBIT_S | |
| #define _FP_NANFRAC_D _FP_QNANBIT_D | |
| #define _FP_NANFRAC_Q _FP_QNANBIT_Q | |
| #define _FP_NANSIGN_S 1 | |
| #define _FP_NANSIGN_D 1 | |
| #define _FP_NANSIGN_Q 1 | |
| #define _FP_KEEPNANFRACP 1 | |
| /* Alpha Architecture Handbook, 4.7.10.4 sais that | |
| * we should prefer any type of NaN in Fb, then Fa. | |
| */ | |
| #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ | |
| do { \ | |
| R##_s = Y##_s; \ | |
| _FP_FRAC_COPY_##wc(R,X); \ | |
| R##_c = FP_CLS_NAN; \ | |
| } while (0) | |
| /* Obtain the current rounding mode. */ | |
| #define FP_ROUNDMODE mode | |
| #define FP_RND_NEAREST (FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT) | |
| #define FP_RND_ZERO (FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT) | |
| #define FP_RND_PINF (FPCR_DYN_PLUS >> FPCR_DYN_SHIFT) | |
| #define FP_RND_MINF (FPCR_DYN_MINUS >> FPCR_DYN_SHIFT) | |
| /* Exception flags. */ | |
| #define FP_EX_INVALID IEEE_TRAP_ENABLE_INV | |
| #define FP_EX_OVERFLOW IEEE_TRAP_ENABLE_OVF | |
| #define FP_EX_UNDERFLOW IEEE_TRAP_ENABLE_UNF | |
| #define FP_EX_DIVZERO IEEE_TRAP_ENABLE_DZE | |
| #define FP_EX_INEXACT IEEE_TRAP_ENABLE_INE | |
| #define FP_EX_DENORM IEEE_TRAP_ENABLE_DNO | |
| #define FP_DENORM_ZERO (swcr & IEEE_MAP_DMZ) | |
| /* We write the results always */ | |
| #define FP_INHIBIT_RESULTS 0 | |
| #endif |