fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / math-emu / quad.h
blob616113626d096077d0f2a1519d8daf552f018516
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).
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.
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.
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. */
25 #ifndef __MATH_EMU_QUAD_H__
26 #define __MATH_EMU_QUAD_H__
28 #if _FP_W_TYPE_SIZE < 32
29 #error "Here's a nickel, kid. Go buy yourself a real computer."
30 #endif
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
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
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))
53 #if _FP_W_TYPE_SIZE < 64
55 union _FP_UNION_Q
57 long double flt;
58 struct
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));
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)
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)
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)
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)
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)
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)
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)
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)
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)
133 #else /* not _FP_W_TYPE_SIZE < 64 */
134 union _FP_UNION_Q
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;
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)
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)
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)
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)
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)
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)
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)
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)
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)
206 #endif /* not _FP_W_TYPE_SIZE < 64 */
208 #endif /* __MATH_EMU_QUAD_H__ */