OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgcc/] [soft-fp/] [double.h] - Blame information for rev 801

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 734 jeremybenn 
/* Software floating-point emulation.
2 
   Definitions for IEEE Double Precision
3 
   Copyright (C) 1997, 1998, 1999, 2006, 2007, 2008, 2009
4 
   Free Software Foundation, Inc.
5 
   This file is part of the GNU C Library.
6 
   Contributed by Richard Henderson (rth@cygnus.com),
7 
                  Jakub Jelinek (jj@ultra.linux.cz),
8 
                  David S. Miller (davem@redhat.com) and
9 
                  Peter Maydell (pmaydell@chiark.greenend.org.uk).
10 
 
11 
   The GNU C Library is free software; you can redistribute it and/or
12 
   modify it under the terms of the GNU Lesser General Public
13 
   License as published by the Free Software Foundation; either
14 
   version 2.1 of the License, or (at your option) any later version.
15 
 
16 
   In addition to the permissions in the GNU Lesser General Public
17 
   License, the Free Software Foundation gives you unlimited
18 
   permission to link the compiled version of this file into
19 
   combinations with other programs, and to distribute those
20 
   combinations without any restriction coming from the use of this
21 
   file.  (The Lesser General Public License restrictions do apply in
22 
   other respects; for example, they cover modification of the file,
23 
   and distribution when not linked into a combine executable.)
24 
 
25 
   The GNU C Library is distributed in the hope that it will be useful,
26 
   but WITHOUT ANY WARRANTY; without even the implied warranty of
27 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
28 
   Lesser General Public License for more details.
29 
 
30 
   You should have received a copy of the GNU Lesser General Public
31 
   License along with the GNU C Library; if not, write to the Free
32 
   Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
33 
   MA 02110-1301, USA.  */
34 
 
35 
#if _FP_W_TYPE_SIZE < 32
36 
#error "Here's a nickel kid.  Go buy yourself a real computer."
37 
#endif
38 
 
39 
#if _FP_W_TYPE_SIZE < 64
40 
#define _FP_FRACTBITS_D         (2 * _FP_W_TYPE_SIZE)
41 
#else
42 
#define _FP_FRACTBITS_D         _FP_W_TYPE_SIZE
43 
#endif
44 
 
45 
#define _FP_FRACBITS_D          53
46 
#define _FP_FRACXBITS_D         (_FP_FRACTBITS_D - _FP_FRACBITS_D)
47 
#define _FP_WFRACBITS_D         (_FP_WORKBITS + _FP_FRACBITS_D)
48 
#define _FP_WFRACXBITS_D        (_FP_FRACTBITS_D - _FP_WFRACBITS_D)
49 
#define _FP_EXPBITS_D           11
50 
#define _FP_EXPBIAS_D           1023
51 
#define _FP_EXPMAX_D            2047
52 
 
53 
#define _FP_QNANBIT_D           \
54 
        ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-2) % _FP_W_TYPE_SIZE)
55 
#define _FP_QNANBIT_SH_D                \
56 
        ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
57 
#define _FP_IMPLBIT_D           \
58 
        ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-1) % _FP_W_TYPE_SIZE)
59 
#define _FP_IMPLBIT_SH_D                \
60 
        ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
61 
#define _FP_OVERFLOW_D          \
62 
        ((_FP_W_TYPE)1 << _FP_WFRACBITS_D % _FP_W_TYPE_SIZE)
63 
 
64 
typedef float DFtype __attribute__((mode(DF)));
65 
 
66 
#if _FP_W_TYPE_SIZE < 64
67 
 
68 
union _FP_UNION_D
69 
{
70 
  DFtype flt;
71 
  struct {
72 
#if __BYTE_ORDER == __BIG_ENDIAN
73 
    unsigned sign  : 1;
74 
    unsigned exp   : _FP_EXPBITS_D;
75 
    unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
76 
    unsigned frac0 : _FP_W_TYPE_SIZE;
77 
#else
78 
    unsigned frac0 : _FP_W_TYPE_SIZE;
79 
    unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
80 
    unsigned exp   : _FP_EXPBITS_D;
81 
    unsigned sign  : 1;
82 
#endif
83 
  } bits __attribute__((packed));
84 
};
85 
 
86 
#define FP_DECL_D(X)            _FP_DECL(2,X)
87 
#define FP_UNPACK_RAW_D(X,val)  _FP_UNPACK_RAW_2(D,X,val)
88 
#define FP_UNPACK_RAW_DP(X,val) _FP_UNPACK_RAW_2_P(D,X,val)
89 
#define FP_PACK_RAW_D(val,X)    _FP_PACK_RAW_2(D,val,X)
90 
#define FP_PACK_RAW_DP(val,X)           \
91 
  do {                                  \
92 
    if (!FP_INHIBIT_RESULTS)            \
93 
      _FP_PACK_RAW_2_P(D,val,X);        \
94 
  } while (0)
95 
 
96 
#define FP_UNPACK_D(X,val)              \
97 
  do {                                  \
98 
    _FP_UNPACK_RAW_2(D,X,val);          \
99 
    _FP_UNPACK_CANONICAL(D,2,X);        \
100 
  } while (0)
101 
 
102 
#define FP_UNPACK_DP(X,val)             \
103 
  do {                                  \
104 
    _FP_UNPACK_RAW_2_P(D,X,val);        \
105 
    _FP_UNPACK_CANONICAL(D,2,X);        \
106 
  } while (0)
107 
 
108 
#define FP_UNPACK_SEMIRAW_D(X,val)      \
109 
  do {                                  \
110 
    _FP_UNPACK_RAW_2(D,X,val);          \
111 
    _FP_UNPACK_SEMIRAW(D,2,X);          \
112 
  } while (0)
113 
 
114 
#define FP_UNPACK_SEMIRAW_DP(X,val)     \
115 
  do {                                  \
116 
    _FP_UNPACK_RAW_2_P(D,X,val);        \
117 
    _FP_UNPACK_SEMIRAW(D,2,X);          \
118 
  } while (0)
119 
 
120 
#define FP_PACK_D(val,X)                \
121 
  do {                                  \
122 
    _FP_PACK_CANONICAL(D,2,X);          \
123 
    _FP_PACK_RAW_2(D,val,X);            \
124 
  } while (0)
125 
 
126 
#define FP_PACK_DP(val,X)               \
127 
  do {                                  \
128 
    _FP_PACK_CANONICAL(D,2,X);          \
129 
    if (!FP_INHIBIT_RESULTS)            \
130 
      _FP_PACK_RAW_2_P(D,val,X);        \
131 
  } while (0)
132 
 
133 
#define FP_PACK_SEMIRAW_D(val,X)        \
134 
  do {                                  \
135 
    _FP_PACK_SEMIRAW(D,2,X);            \
136 
    _FP_PACK_RAW_2(D,val,X);            \
137 
  } while (0)
138 
 
139 
#define FP_PACK_SEMIRAW_DP(val,X)       \
140 
  do {                                  \
141 
    _FP_PACK_SEMIRAW(D,2,X);            \
142 
    if (!FP_INHIBIT_RESULTS)            \
143 
      _FP_PACK_RAW_2_P(D,val,X);        \
144 
  } while (0)
145 
 
146 
#define FP_ISSIGNAN_D(X)                _FP_ISSIGNAN(D,2,X)
147 
#define FP_NEG_D(R,X)                   _FP_NEG(D,2,R,X)
148 
#define FP_ADD_D(R,X,Y)                 _FP_ADD(D,2,R,X,Y)
149 
#define FP_SUB_D(R,X,Y)                 _FP_SUB(D,2,R,X,Y)
150 
#define FP_MUL_D(R,X,Y)                 _FP_MUL(D,2,R,X,Y)
151 
#define FP_DIV_D(R,X,Y)                 _FP_DIV(D,2,R,X,Y)
152 
#define FP_SQRT_D(R,X)                  _FP_SQRT(D,2,R,X)
153 
#define _FP_SQRT_MEAT_D(R,S,T,X,Q)      _FP_SQRT_MEAT_2(R,S,T,X,Q)
154 
 
155 
#define FP_CMP_D(r,X,Y,un)      _FP_CMP(D,2,r,X,Y,un)
156 
#define FP_CMP_EQ_D(r,X,Y)      _FP_CMP_EQ(D,2,r,X,Y)
157 
#define FP_CMP_UNORD_D(r,X,Y)   _FP_CMP_UNORD(D,2,r,X,Y)
158 
 
159 
#define FP_TO_INT_D(r,X,rsz,rsg)        _FP_TO_INT(D,2,r,X,rsz,rsg)
160 
#define FP_FROM_INT_D(X,r,rs,rt)        _FP_FROM_INT(D,2,X,r,rs,rt)
161 
 
162 
#define _FP_FRAC_HIGH_D(X)      _FP_FRAC_HIGH_2(X)
163 
#define _FP_FRAC_HIGH_RAW_D(X)  _FP_FRAC_HIGH_2(X)
164 
 
165 
#else
166 
 
167 
union _FP_UNION_D
168 
{
169 
  DFtype flt;
170 
  struct {
171 
#if __BYTE_ORDER == __BIG_ENDIAN
172 
    unsigned sign   : 1;
173 
    unsigned exp    : _FP_EXPBITS_D;
174 
    _FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
175 
#else
176 
    _FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
177 
    unsigned exp    : _FP_EXPBITS_D;
178 
    unsigned sign   : 1;
179 
#endif
180 
  } bits __attribute__((packed));
181 
};
182 
 
183 
#define FP_DECL_D(X)            _FP_DECL(1,X)
184 
#define FP_UNPACK_RAW_D(X,val)  _FP_UNPACK_RAW_1(D,X,val)
185 
#define FP_UNPACK_RAW_DP(X,val) _FP_UNPACK_RAW_1_P(D,X,val)
186 
#define FP_PACK_RAW_D(val,X)    _FP_PACK_RAW_1(D,val,X)
187 
#define FP_PACK_RAW_DP(val,X)           \
188 
  do {                                  \
189 
    if (!FP_INHIBIT_RESULTS)            \
190 
      _FP_PACK_RAW_1_P(D,val,X);        \
191 
  } while (0)
192 
 
193 
#define FP_UNPACK_D(X,val)              \
194 
  do {                                  \
195 
    _FP_UNPACK_RAW_1(D,X,val);          \
196 
    _FP_UNPACK_CANONICAL(D,1,X);        \
197 
  } while (0)
198 
 
199 
#define FP_UNPACK_DP(X,val)             \
200 
  do {                                  \
201 
    _FP_UNPACK_RAW_1_P(D,X,val);        \
202 
    _FP_UNPACK_CANONICAL(D,1,X);        \
203 
  } while (0)
204 
 
205 
#define FP_UNPACK_SEMIRAW_D(X,val)      \
206 
  do {                                  \
207 
    _FP_UNPACK_RAW_1(D,X,val);          \
208 
    _FP_UNPACK_SEMIRAW(D,1,X);          \
209 
  } while (0)
210 
 
211 
#define FP_UNPACK_SEMIRAW_DP(X,val)     \
212 
  do {                                  \
213 
    _FP_UNPACK_RAW_1_P(D,X,val);        \
214 
    _FP_UNPACK_SEMIRAW(D,1,X);          \
215 
  } while (0)
216 
 
217 
#define FP_PACK_D(val,X)                \
218 
  do {                                  \
219 
    _FP_PACK_CANONICAL(D,1,X);          \
220 
    _FP_PACK_RAW_1(D,val,X);            \
221 
  } while (0)
222 
 
223 
#define FP_PACK_DP(val,X)               \
224 
  do {                                  \
225 
    _FP_PACK_CANONICAL(D,1,X);          \
226 
    if (!FP_INHIBIT_RESULTS)            \
227 
      _FP_PACK_RAW_1_P(D,val,X);        \
228 
  } while (0)
229 
 
230 
#define FP_PACK_SEMIRAW_D(val,X)        \
231 
  do {                                  \
232 
    _FP_PACK_SEMIRAW(D,1,X);            \
233 
    _FP_PACK_RAW_1(D,val,X);            \
234 
  } while (0)
235 
 
236 
#define FP_PACK_SEMIRAW_DP(val,X)       \
237 
  do {                                  \
238 
    _FP_PACK_SEMIRAW(D,1,X);            \
239 
    if (!FP_INHIBIT_RESULTS)            \
240 
      _FP_PACK_RAW_1_P(D,val,X);        \
241 
  } while (0)
242 
 
243 
#define FP_ISSIGNAN_D(X)                _FP_ISSIGNAN(D,1,X)
244 
#define FP_NEG_D(R,X)                   _FP_NEG(D,1,R,X)
245 
#define FP_ADD_D(R,X,Y)                 _FP_ADD(D,1,R,X,Y)
246 
#define FP_SUB_D(R,X,Y)                 _FP_SUB(D,1,R,X,Y)
247 
#define FP_MUL_D(R,X,Y)                 _FP_MUL(D,1,R,X,Y)
248 
#define FP_DIV_D(R,X,Y)                 _FP_DIV(D,1,R,X,Y)
249 
#define FP_SQRT_D(R,X)                  _FP_SQRT(D,1,R,X)
250 
#define _FP_SQRT_MEAT_D(R,S,T,X,Q)      _FP_SQRT_MEAT_1(R,S,T,X,Q)
251 
 
252 
/* The implementation of _FP_MUL_D and _FP_DIV_D should be chosen by
253 
   the target machine.  */
254 
 
255 
#define FP_CMP_D(r,X,Y,un)      _FP_CMP(D,1,r,X,Y,un)
256 
#define FP_CMP_EQ_D(r,X,Y)      _FP_CMP_EQ(D,1,r,X,Y)
257 
#define FP_CMP_UNORD_D(r,X,Y)   _FP_CMP_UNORD(D,1,r,X,Y)
258 
 
259 
#define FP_TO_INT_D(r,X,rsz,rsg)        _FP_TO_INT(D,1,r,X,rsz,rsg)
260 
#define FP_FROM_INT_D(X,r,rs,rt)        _FP_FROM_INT(D,1,X,r,rs,rt)
261 
 
262 
#define _FP_FRAC_HIGH_D(X)      _FP_FRAC_HIGH_1(X)
263 
#define _FP_FRAC_HIGH_RAW_D(X)  _FP_FRAC_HIGH_1(X)
264 
 
265 
#endif /* W_TYPE_SIZE < 64 */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.