Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Machine-dependent software floating-point definitions. |
2 | Alpha kernel version. | |
3 | Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. | |
4 | This file is part of the GNU C Library. | |
5 | Contributed by Richard Henderson (rth@cygnus.com), | |
6 | Jakub Jelinek (jakub@redhat.com) and | |
7 | David S. Miller (davem@redhat.com). | |
8 | ||
9 | The GNU C Library is free software; you can redistribute it and/or | |
10 | modify it under the terms of the GNU Library General Public License as | |
11 | published by the Free Software Foundation; either version 2 of the | |
12 | License, or (at your option) any later version. | |
13 | ||
14 | The GNU C Library is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | Library General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU Library General Public | |
20 | License along with the GNU C Library; see the file COPYING.LIB. If | |
21 | not, write to the Free Software Foundation, Inc., | |
22 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
23 | ||
24 | #ifndef _SFP_MACHINE_H | |
25 | #define _SFP_MACHINE_H | |
26 | ||
27 | #define _FP_W_TYPE_SIZE 64 | |
28 | #define _FP_W_TYPE unsigned long | |
29 | #define _FP_WS_TYPE signed long | |
30 | #define _FP_I_TYPE long | |
31 | ||
32 | #define _FP_MUL_MEAT_S(R,X,Y) \ | |
33 | _FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y) | |
34 | #define _FP_MUL_MEAT_D(R,X,Y) \ | |
35 | _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) | |
36 | #define _FP_MUL_MEAT_Q(R,X,Y) \ | |
37 | _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) | |
38 | ||
39 | #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm) | |
40 | #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv(D,R,X,Y) | |
41 | #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) | |
42 | ||
43 | #define _FP_NANFRAC_S _FP_QNANBIT_S | |
44 | #define _FP_NANFRAC_D _FP_QNANBIT_D | |
45 | #define _FP_NANFRAC_Q _FP_QNANBIT_Q | |
46 | #define _FP_NANSIGN_S 1 | |
47 | #define _FP_NANSIGN_D 1 | |
48 | #define _FP_NANSIGN_Q 1 | |
49 | ||
50 | #define _FP_KEEPNANFRACP 1 | |
51 | ||
52 | /* Alpha Architecture Handbook, 4.7.10.4 sais that | |
53 | * we should prefer any type of NaN in Fb, then Fa. | |
54 | */ | |
55 | #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ | |
56 | do { \ | |
57 | R##_s = Y##_s; \ | |
58 | _FP_FRAC_COPY_##wc(R,X); \ | |
59 | R##_c = FP_CLS_NAN; \ | |
60 | } while (0) | |
61 | ||
62 | /* Obtain the current rounding mode. */ | |
63 | #define FP_ROUNDMODE mode | |
64 | #define FP_RND_NEAREST (FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT) | |
65 | #define FP_RND_ZERO (FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT) | |
66 | #define FP_RND_PINF (FPCR_DYN_PLUS >> FPCR_DYN_SHIFT) | |
67 | #define FP_RND_MINF (FPCR_DYN_MINUS >> FPCR_DYN_SHIFT) | |
68 | ||
69 | /* Exception flags. */ | |
70 | #define FP_EX_INVALID IEEE_TRAP_ENABLE_INV | |
71 | #define FP_EX_OVERFLOW IEEE_TRAP_ENABLE_OVF | |
72 | #define FP_EX_UNDERFLOW IEEE_TRAP_ENABLE_UNF | |
73 | #define FP_EX_DIVZERO IEEE_TRAP_ENABLE_DZE | |
74 | #define FP_EX_INEXACT IEEE_TRAP_ENABLE_INE | |
75 | #define FP_EX_DENORM IEEE_TRAP_ENABLE_DNO | |
76 | ||
77 | #define FP_DENORM_ZERO (swcr & IEEE_MAP_DMZ) | |
78 | ||
79 | /* We write the results always */ | |
80 | #define FP_INHIBIT_RESULTS 0 | |
81 | ||
82 | #endif |