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1 | /* Software floating-point emulation. |
2 | Definitions for IEEE Quad Precision. |
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 (jj@ultra.linux.cz), |
7 | David S. Miller (davem@redhat.com) and |
8 | Peter Maydell (pmaydell@chiark.greenend.org.uk). |
9 | |
10 | The GNU C Library is free software; you can redistribute it and/or |
11 | modify it under the terms of the GNU Library General Public License as |
12 | published by the Free Software Foundation; either version 2 of the |
13 | License, or (at your option) any later version. |
14 | |
15 | The GNU C Library is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
18 | Library General Public License for more details. |
19 | |
20 | You should have received a copy of the GNU Library General Public |
21 | License along with the GNU C Library; see the file COPYING.LIB. If |
22 | not, write to the Free Software Foundation, Inc., |
23 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
24 | |
25 | #ifndef __MATH_EMU_QUAD_H__ |
26 | #define __MATH_EMU_QUAD_H__ |
27 | |
28 | #if _FP_W_TYPE_SIZE < 32 |
29 | #error "Here's a nickel, kid. Go buy yourself a real computer." |
30 | #endif |
31 | |
32 | #if _FP_W_TYPE_SIZE < 64 |
33 | #define _FP_FRACTBITS_Q (4*_FP_W_TYPE_SIZE) |
34 | #else |
35 | #define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE) |
36 | #endif |
37 | |
38 | #define _FP_FRACBITS_Q 113 |
39 | #define _FP_FRACXBITS_Q (_FP_FRACTBITS_Q - _FP_FRACBITS_Q) |
40 | #define _FP_WFRACBITS_Q (_FP_WORKBITS + _FP_FRACBITS_Q) |
41 | #define _FP_WFRACXBITS_Q (_FP_FRACTBITS_Q - _FP_WFRACBITS_Q) |
42 | #define _FP_EXPBITS_Q 15 |
43 | #define _FP_EXPBIAS_Q 16383 |
44 | #define _FP_EXPMAX_Q 32767 |
45 | |
46 | #define _FP_QNANBIT_Q \ |
47 | ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2) % _FP_W_TYPE_SIZE) |
48 | #define _FP_IMPLBIT_Q \ |
49 | ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1) % _FP_W_TYPE_SIZE) |
50 | #define _FP_OVERFLOW_Q \ |
51 | ((_FP_W_TYPE)1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE)) |
52 | |
53 | #if _FP_W_TYPE_SIZE < 64 |
54 | |
55 | union _FP_UNION_Q |
56 | { |
57 | long double flt; |
58 | struct |
59 | { |
60 | #if __BYTE_ORDER == __BIG_ENDIAN |
61 | unsigned sign : 1; |
62 | unsigned exp : _FP_EXPBITS_Q; |
63 | unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); |
64 | unsigned long frac2 : _FP_W_TYPE_SIZE; |
65 | unsigned long frac1 : _FP_W_TYPE_SIZE; |
66 | unsigned long frac0 : _FP_W_TYPE_SIZE; |
67 | #else |
68 | unsigned long frac0 : _FP_W_TYPE_SIZE; |
69 | unsigned long frac1 : _FP_W_TYPE_SIZE; |
70 | unsigned long frac2 : _FP_W_TYPE_SIZE; |
71 | unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); |
72 | unsigned exp : _FP_EXPBITS_Q; |
73 | unsigned sign : 1; |
74 | #endif /* not bigendian */ |
75 | } bits __attribute__((packed)); |
76 | }; |
77 | |
78 | |
79 | #define FP_DECL_Q(X) _FP_DECL(4,X) |
80 | #define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_4(Q,X,val) |
81 | #define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_4_P(Q,X,val) |
82 | #define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_4(Q,val,X) |
83 | #define FP_PACK_RAW_QP(val,X) \ |
84 | do { \ |
85 | if (!FP_INHIBIT_RESULTS) \ |
86 | _FP_PACK_RAW_4_P(Q,val,X); \ |
87 | } while (0) |
88 | |
89 | #define FP_UNPACK_Q(X,val) \ |
90 | do { \ |
91 | _FP_UNPACK_RAW_4(Q,X,val); \ |
92 | _FP_UNPACK_CANONICAL(Q,4,X); \ |
93 | } while (0) |
94 | |
95 | #define FP_UNPACK_QP(X,val) \ |
96 | do { \ |
97 | _FP_UNPACK_RAW_4_P(Q,X,val); \ |
98 | _FP_UNPACK_CANONICAL(Q,4,X); \ |
99 | } while (0) |
100 | |
101 | #define FP_PACK_Q(val,X) \ |
102 | do { \ |
103 | _FP_PACK_CANONICAL(Q,4,X); \ |
104 | _FP_PACK_RAW_4(Q,val,X); \ |
105 | } while (0) |
106 | |
107 | #define FP_PACK_QP(val,X) \ |
108 | do { \ |
109 | _FP_PACK_CANONICAL(Q,4,X); \ |
110 | if (!FP_INHIBIT_RESULTS) \ |
111 | _FP_PACK_RAW_4_P(Q,val,X); \ |
112 | } while (0) |
113 | |
114 | #define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,4,X) |
115 | #define FP_NEG_Q(R,X) _FP_NEG(Q,4,R,X) |
116 | #define FP_ADD_Q(R,X,Y) _FP_ADD(Q,4,R,X,Y) |
117 | #define FP_SUB_Q(R,X,Y) _FP_SUB(Q,4,R,X,Y) |
118 | #define FP_MUL_Q(R,X,Y) _FP_MUL(Q,4,R,X,Y) |
119 | #define FP_DIV_Q(R,X,Y) _FP_DIV(Q,4,R,X,Y) |
120 | #define FP_SQRT_Q(R,X) _FP_SQRT(Q,4,R,X) |
121 | #define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_4(R,S,T,X,Q) |
122 | |
123 | #define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,4,r,X,Y,un) |
124 | #define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,4,r,X,Y) |
125 | |
126 | #define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,4,r,X,rsz,rsg) |
127 | #define FP_TO_INT_ROUND_Q(r,X,rsz,rsg) _FP_TO_INT_ROUND(Q,4,r,X,rsz,rsg) |
128 | #define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,4,X,r,rs,rt) |
129 | |
130 | #define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_4(X) |
131 | #define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_4(X) |
132 | |
133 | #else /* not _FP_W_TYPE_SIZE < 64 */ |
134 | union _FP_UNION_Q |
135 | { |
136 | long double flt /* __attribute__((mode(TF))) */ ; |
137 | struct { |
138 | #if __BYTE_ORDER == __BIG_ENDIAN |
139 | unsigned sign : 1; |
140 | unsigned exp : _FP_EXPBITS_Q; |
141 | unsigned long frac1 : _FP_FRACBITS_Q-(_FP_IMPLBIT_Q != 0)-_FP_W_TYPE_SIZE; |
142 | unsigned long frac0 : _FP_W_TYPE_SIZE; |
143 | #else |
144 | unsigned long frac0 : _FP_W_TYPE_SIZE; |
145 | unsigned long frac1 : _FP_FRACBITS_Q-(_FP_IMPLBIT_Q != 0)-_FP_W_TYPE_SIZE; |
146 | unsigned exp : _FP_EXPBITS_Q; |
147 | unsigned sign : 1; |
148 | #endif |
149 | } bits; |
150 | }; |
151 | |
152 | #define FP_DECL_Q(X) _FP_DECL(2,X) |
153 | #define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_2(Q,X,val) |
154 | #define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_2_P(Q,X,val) |
155 | #define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_2(Q,val,X) |
156 | #define FP_PACK_RAW_QP(val,X) \ |
157 | do { \ |
158 | if (!FP_INHIBIT_RESULTS) \ |
159 | _FP_PACK_RAW_2_P(Q,val,X); \ |
160 | } while (0) |
161 | |
162 | #define FP_UNPACK_Q(X,val) \ |
163 | do { \ |
164 | _FP_UNPACK_RAW_2(Q,X,val); \ |
165 | _FP_UNPACK_CANONICAL(Q,2,X); \ |
166 | } while (0) |
167 | |
168 | #define FP_UNPACK_QP(X,val) \ |
169 | do { \ |
170 | _FP_UNPACK_RAW_2_P(Q,X,val); \ |
171 | _FP_UNPACK_CANONICAL(Q,2,X); \ |
172 | } while (0) |
173 | |
174 | #define FP_PACK_Q(val,X) \ |
175 | do { \ |
176 | _FP_PACK_CANONICAL(Q,2,X); \ |
177 | _FP_PACK_RAW_2(Q,val,X); \ |
178 | } while (0) |
179 | |
180 | #define FP_PACK_QP(val,X) \ |
181 | do { \ |
182 | _FP_PACK_CANONICAL(Q,2,X); \ |
183 | if (!FP_INHIBIT_RESULTS) \ |
184 | _FP_PACK_RAW_2_P(Q,val,X); \ |
185 | } while (0) |
186 | |
187 | #define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,2,X) |
188 | #define FP_NEG_Q(R,X) _FP_NEG(Q,2,R,X) |
189 | #define FP_ADD_Q(R,X,Y) _FP_ADD(Q,2,R,X,Y) |
190 | #define FP_SUB_Q(R,X,Y) _FP_SUB(Q,2,R,X,Y) |
191 | #define FP_MUL_Q(R,X,Y) _FP_MUL(Q,2,R,X,Y) |
192 | #define FP_DIV_Q(R,X,Y) _FP_DIV(Q,2,R,X,Y) |
193 | #define FP_SQRT_Q(R,X) _FP_SQRT(Q,2,R,X) |
194 | #define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_2(R,S,T,X,Q) |
195 | |
196 | #define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,2,r,X,Y,un) |
197 | #define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,2,r,X,Y) |
198 | |
199 | #define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,2,r,X,rsz,rsg) |
200 | #define FP_TO_INT_ROUND_Q(r,X,rsz,rsg) _FP_TO_INT_ROUND(Q,2,r,X,rsz,rsg) |
201 | #define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,2,X,r,rs,rt) |
202 | |
203 | #define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_2(X) |
204 | #define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_2(X) |
205 | |
206 | #endif /* not _FP_W_TYPE_SIZE < 64 */ |
207 | |
208 | #endif /* __MATH_EMU_QUAD_H__ */ |
209 |
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