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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [config/] [soft-fp/] [double.h] - Blame information for rev 816

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

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