1 /* Software floating-point emulation.
2 Definitions for IEEE Quad Precision.
3 Copyright (C) 1997-2013 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).
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
12 License as published by the Free Software Foundation; either
13 version 2.1 of the License, or (at your option) any later version.
15 In addition to the permissions in the GNU Lesser General Public
16 License, the Free Software Foundation gives you unlimited
17 permission to link the compiled version of this file into
18 combinations with other programs, and to distribute those
19 combinations without any restriction coming from the use of this
20 file. (The Lesser General Public License restrictions do apply in
21 other respects; for example, they cover modification of the file,
22 and distribution when not linked into a combine executable.)
24 The GNU C Library is distributed in the hope that it will be useful,
25 but WITHOUT ANY WARRANTY; without even the implied warranty of
26 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 Lesser General Public License for more details.
29 You should have received a copy of the GNU Lesser General Public
30 License along with the GNU C Library; if not, see
31 <http://www.gnu.org/licenses/>. */
33 #if _FP_W_TYPE_SIZE < 32
34 # error "Here's a nickel, kid. Go buy yourself a real computer."
37 #if _FP_W_TYPE_SIZE < 64
38 # define _FP_FRACTBITS_Q (4*_FP_W_TYPE_SIZE)
39 # define _FP_FRACTBITS_DW_Q (8*_FP_W_TYPE_SIZE)
41 # define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE)
42 # define _FP_FRACTBITS_DW_Q (4*_FP_W_TYPE_SIZE)
45 #define _FP_FRACBITS_Q 113
46 #define _FP_FRACXBITS_Q (_FP_FRACTBITS_Q - _FP_FRACBITS_Q)
47 #define _FP_WFRACBITS_Q (_FP_WORKBITS + _FP_FRACBITS_Q)
48 #define _FP_WFRACXBITS_Q (_FP_FRACTBITS_Q - _FP_WFRACBITS_Q)
49 #define _FP_EXPBITS_Q 15
50 #define _FP_EXPBIAS_Q 16383
51 #define _FP_EXPMAX_Q 32767
53 #define _FP_QNANBIT_Q \
54 ((_FP_W_TYPE) 1 << (_FP_FRACBITS_Q-2) % _FP_W_TYPE_SIZE)
55 #define _FP_QNANBIT_SH_Q \
56 ((_FP_W_TYPE) 1 << (_FP_FRACBITS_Q-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
57 #define _FP_IMPLBIT_Q \
58 ((_FP_W_TYPE) 1 << (_FP_FRACBITS_Q-1) % _FP_W_TYPE_SIZE)
59 #define _FP_IMPLBIT_SH_Q \
60 ((_FP_W_TYPE) 1 << (_FP_FRACBITS_Q-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
61 #define _FP_OVERFLOW_Q \
62 ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE))
64 #define _FP_WFRACBITS_DW_Q (2 * _FP_WFRACBITS_Q)
65 #define _FP_WFRACXBITS_DW_Q (_FP_FRACTBITS_DW_Q - _FP_WFRACBITS_DW_Q)
66 #define _FP_HIGHBIT_DW_Q \
67 ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_Q - 1) % _FP_W_TYPE_SIZE)
69 typedef float TFtype
__attribute__ ((mode (TF
)));
71 #if _FP_W_TYPE_SIZE < 64
76 struct _FP_STRUCT_LAYOUT
78 # if __BYTE_ORDER == __BIG_ENDIAN
80 unsigned exp
: _FP_EXPBITS_Q
;
81 unsigned long frac3
: _FP_FRACBITS_Q
- (_FP_IMPLBIT_Q
!= 0)-(_FP_W_TYPE_SIZE
* 3);
82 unsigned long frac2
: _FP_W_TYPE_SIZE
;
83 unsigned long frac1
: _FP_W_TYPE_SIZE
;
84 unsigned long frac0
: _FP_W_TYPE_SIZE
;
86 unsigned long frac0
: _FP_W_TYPE_SIZE
;
87 unsigned long frac1
: _FP_W_TYPE_SIZE
;
88 unsigned long frac2
: _FP_W_TYPE_SIZE
;
89 unsigned long frac3
: _FP_FRACBITS_Q
- (_FP_IMPLBIT_Q
!= 0)-(_FP_W_TYPE_SIZE
* 3);
90 unsigned exp
: _FP_EXPBITS_Q
;
92 # endif /* not bigendian */
93 } bits
__attribute__ ((packed
));
97 # define FP_DECL_Q(X) _FP_DECL (4, X)
98 # define FP_UNPACK_RAW_Q(X, val) _FP_UNPACK_RAW_4 (Q, X, val)
99 # define FP_UNPACK_RAW_QP(X, val) _FP_UNPACK_RAW_4_P (Q, X, val)
100 # define FP_PACK_RAW_Q(val, X) _FP_PACK_RAW_4 (Q, val, X)
101 # define FP_PACK_RAW_QP(val, X) \
104 if (!FP_INHIBIT_RESULTS) \
105 _FP_PACK_RAW_4_P (Q, val, X); \
109 # define FP_UNPACK_Q(X, val) \
112 _FP_UNPACK_RAW_4 (Q, X, val); \
113 _FP_UNPACK_CANONICAL (Q, 4, X); \
117 # define FP_UNPACK_QP(X, val) \
120 _FP_UNPACK_RAW_4_P (Q, X, val); \
121 _FP_UNPACK_CANONICAL (Q, 4, X); \
125 # define FP_UNPACK_SEMIRAW_Q(X, val) \
128 _FP_UNPACK_RAW_4 (Q, X, val); \
129 _FP_UNPACK_SEMIRAW (Q, 4, X); \
133 # define FP_UNPACK_SEMIRAW_QP(X, val) \
136 _FP_UNPACK_RAW_4_P (Q, X, val); \
137 _FP_UNPACK_SEMIRAW (Q, 4, X); \
141 # define FP_PACK_Q(val, X) \
144 _FP_PACK_CANONICAL (Q, 4, X); \
145 _FP_PACK_RAW_4 (Q, val, X); \
149 # define FP_PACK_QP(val, X) \
152 _FP_PACK_CANONICAL (Q, 4, X); \
153 if (!FP_INHIBIT_RESULTS) \
154 _FP_PACK_RAW_4_P (Q, val, X); \
158 # define FP_PACK_SEMIRAW_Q(val, X) \
161 _FP_PACK_SEMIRAW (Q, 4, X); \
162 _FP_PACK_RAW_4 (Q, val, X); \
166 # define FP_PACK_SEMIRAW_QP(val, X) \
169 _FP_PACK_SEMIRAW (Q, 4, X); \
170 if (!FP_INHIBIT_RESULTS) \
171 _FP_PACK_RAW_4_P (Q, val, X); \
175 # define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN (Q, 4, X)
176 # define FP_NEG_Q(R, X) _FP_NEG (Q, 4, R, X)
177 # define FP_ADD_Q(R, X, Y) _FP_ADD (Q, 4, R, X, Y)
178 # define FP_SUB_Q(R, X, Y) _FP_SUB (Q, 4, R, X, Y)
179 # define FP_MUL_Q(R, X, Y) _FP_MUL (Q, 4, R, X, Y)
180 # define FP_DIV_Q(R, X, Y) _FP_DIV (Q, 4, R, X, Y)
181 # define FP_SQRT_Q(R, X) _FP_SQRT (Q, 4, R, X)
182 # define _FP_SQRT_MEAT_Q(R, S, T, X, Q) _FP_SQRT_MEAT_4 (R, S, T, X, Q)
183 # define FP_FMA_Q(R, X, Y, Z) _FP_FMA (Q, 4, 8, R, X, Y, Z)
185 # define FP_CMP_Q(r, X, Y, un) _FP_CMP (Q, 4, r, X, Y, un)
186 # define FP_CMP_EQ_Q(r, X, Y) _FP_CMP_EQ (Q, 4, r, X, Y)
187 # define FP_CMP_UNORD_Q(r, X, Y) _FP_CMP_UNORD (Q, 4, r, X, Y)
189 # define FP_TO_INT_Q(r, X, rsz, rsg) _FP_TO_INT (Q, 4, r, X, rsz, rsg)
190 # define FP_FROM_INT_Q(X, r, rs, rt) _FP_FROM_INT (Q, 4, X, r, rs, rt)
192 # define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_4 (X)
193 # define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_4 (X)
195 # define _FP_FRAC_HIGH_DW_Q(X) _FP_FRAC_HIGH_8 (X)
197 #else /* not _FP_W_TYPE_SIZE < 64 */
200 TFtype flt
/* __attribute__ ((mode (TF))) */ ;
201 struct _FP_STRUCT_LAYOUT
205 struct _FP_STRUCT_LAYOUT
207 # if __BYTE_ORDER == __BIG_ENDIAN
209 unsigned exp
: _FP_EXPBITS_Q
;
210 _FP_W_TYPE frac1
: _FP_FRACBITS_Q
- (_FP_IMPLBIT_Q
!= 0) - _FP_W_TYPE_SIZE
;
211 _FP_W_TYPE frac0
: _FP_W_TYPE_SIZE
;
213 _FP_W_TYPE frac0
: _FP_W_TYPE_SIZE
;
214 _FP_W_TYPE frac1
: _FP_FRACBITS_Q
- (_FP_IMPLBIT_Q
!= 0) - _FP_W_TYPE_SIZE
;
215 unsigned exp
: _FP_EXPBITS_Q
;
221 # define FP_DECL_Q(X) _FP_DECL (2, X)
222 # define FP_UNPACK_RAW_Q(X, val) _FP_UNPACK_RAW_2 (Q, X, val)
223 # define FP_UNPACK_RAW_QP(X, val) _FP_UNPACK_RAW_2_P (Q, X, val)
224 # define FP_PACK_RAW_Q(val, X) _FP_PACK_RAW_2 (Q, val, X)
225 # define FP_PACK_RAW_QP(val, X) \
228 if (!FP_INHIBIT_RESULTS) \
229 _FP_PACK_RAW_2_P (Q, val, X); \
233 # define FP_UNPACK_Q(X, val) \
236 _FP_UNPACK_RAW_2 (Q, X, val); \
237 _FP_UNPACK_CANONICAL (Q, 2, X); \
241 # define FP_UNPACK_QP(X, val) \
244 _FP_UNPACK_RAW_2_P (Q, X, val); \
245 _FP_UNPACK_CANONICAL (Q, 2, X); \
249 # define FP_UNPACK_SEMIRAW_Q(X, val) \
252 _FP_UNPACK_RAW_2 (Q, X, val); \
253 _FP_UNPACK_SEMIRAW (Q, 2, X); \
257 # define FP_UNPACK_SEMIRAW_QP(X, val) \
260 _FP_UNPACK_RAW_2_P (Q, X, val); \
261 _FP_UNPACK_SEMIRAW (Q, 2, X); \
265 # define FP_PACK_Q(val, X) \
268 _FP_PACK_CANONICAL (Q, 2, X); \
269 _FP_PACK_RAW_2 (Q, val, X); \
273 # define FP_PACK_QP(val, X) \
276 _FP_PACK_CANONICAL (Q, 2, X); \
277 if (!FP_INHIBIT_RESULTS) \
278 _FP_PACK_RAW_2_P (Q, val, X); \
282 # define FP_PACK_SEMIRAW_Q(val, X) \
285 _FP_PACK_SEMIRAW (Q, 2, X); \
286 _FP_PACK_RAW_2 (Q, val, X); \
290 # define FP_PACK_SEMIRAW_QP(val, X) \
293 _FP_PACK_SEMIRAW (Q, 2, X); \
294 if (!FP_INHIBIT_RESULTS) \
295 _FP_PACK_RAW_2_P (Q, val, X); \
299 # define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN (Q, 2, X)
300 # define FP_NEG_Q(R, X) _FP_NEG (Q, 2, R, X)
301 # define FP_ADD_Q(R, X, Y) _FP_ADD (Q, 2, R, X, Y)
302 # define FP_SUB_Q(R, X, Y) _FP_SUB (Q, 2, R, X, Y)
303 # define FP_MUL_Q(R, X, Y) _FP_MUL (Q, 2, R, X, Y)
304 # define FP_DIV_Q(R, X, Y) _FP_DIV (Q, 2, R, X, Y)
305 # define FP_SQRT_Q(R, X) _FP_SQRT (Q, 2, R, X)
306 # define _FP_SQRT_MEAT_Q(R, S, T, X, Q) _FP_SQRT_MEAT_2 (R, S, T, X, Q)
307 # define FP_FMA_Q(R, X, Y, Z) _FP_FMA (Q, 2, 4, R, X, Y, Z)
309 # define FP_CMP_Q(r, X, Y, un) _FP_CMP (Q, 2, r, X, Y, un)
310 # define FP_CMP_EQ_Q(r, X, Y) _FP_CMP_EQ (Q, 2, r, X, Y)
311 # define FP_CMP_UNORD_Q(r, X, Y) _FP_CMP_UNORD (Q, 2, r, X, Y)
313 # define FP_TO_INT_Q(r, X, rsz, rsg) _FP_TO_INT (Q, 2, r, X, rsz, rsg)
314 # define FP_FROM_INT_Q(X, r, rs, rt) _FP_FROM_INT (Q, 2, X, r, rs, rt)
316 # define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_2 (X)
317 # define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_2 (X)
319 # define _FP_FRAC_HIGH_DW_Q(X) _FP_FRAC_HIGH_4 (X)
321 #endif /* not _FP_W_TYPE_SIZE < 64 */