Drizzled Public API Documentation

myisampack.h
1 /* Copyright (C) 2000 MySQL AB
2 
3  This program is free software; you can redistribute it and/or modify
4  it under the terms of the GNU General Public License as published by
5  the Free Software Foundation; version 2 of the License.
6 
7  This program is distributed in the hope that it will be useful,
8  but WITHOUT ANY WARRANTY; without even the implied warranty of
9  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  GNU General Public License for more details.
11 
12  You should have received a copy of the GNU General Public License
13  along with this program; if not, write to the Free Software
14  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
15 
16 #pragma once
17 
18 /*
19  Storing of values in high byte first order.
20 
21  integer keys and file pointers are stored with high byte first to get
22  better compression
23 */
24 
25 /* these two are for uniformity */
26 #define mi_sint1korr(A) ((int8_t)(*A))
27 
28 #define mi_sint2korr(A) ((int16_t) (((int16_t) (((const unsigned char*) (A))[1])) +\
29  ((int16_t) ((int16_t) ((const char*) (A))[0]) << 8)))
30 #define mi_sint3korr(A) ((int32_t) (((((const unsigned char*) (A))[0]) & 128) ? \
31  (((uint32_t) 255L << 24) | \
32  (((uint32_t) ((const unsigned char*) (A))[0]) << 16) |\
33  (((uint32_t) ((const unsigned char*) (A))[1]) << 8) | \
34  ((uint32_t) ((const unsigned char*) (A))[2])) : \
35  (((uint32_t) ((const unsigned char*) (A))[0]) << 16) |\
36  (((uint32_t) ((const unsigned char*) (A))[1]) << 8) | \
37  ((uint32_t) ((const unsigned char*) (A))[2])))
38 #define mi_sint4korr(A) ((int32_t) (((int32_t) (((const unsigned char*) (A))[3])) +\
39  ((int32_t) (((const unsigned char*) (A))[2]) << 8) +\
40  ((int32_t) (((const unsigned char*) (A))[1]) << 16) +\
41  ((int32_t) ((int16_t) ((const char*) (A))[0]) << 24)))
42 #define mi_sint8korr(A) ((int64_t) mi_uint8korr(A))
43 #define mi_uint2korr(A) ((uint16_t) (((uint16_t) (((const unsigned char*) (A))[1])) +\
44  ((uint16_t) (((const unsigned char*) (A))[0]) << 8)))
45 #define mi_uint3korr(A) ((uint32_t) (((uint32_t) (((const unsigned char*) (A))[2])) +\
46  (((uint32_t) (((const unsigned char*) (A))[1])) << 8) +\
47  (((uint32_t) (((const unsigned char*) (A))[0])) << 16)))
48 #define mi_uint4korr(A) ((uint32_t) (((uint32_t) (((const unsigned char*) (A))[3])) +\
49  (((uint32_t) (((const unsigned char*) (A))[2])) << 8) +\
50  (((uint32_t) (((const unsigned char*) (A))[1])) << 16) +\
51  (((uint32_t) (((const unsigned char*) (A))[0])) << 24)))
52 #define mi_uint5korr(A) ((uint64_t)(((uint32_t) (((const unsigned char*) (A))[4])) +\
53  (((uint32_t) (((const unsigned char*) (A))[3])) << 8) +\
54  (((uint32_t) (((const unsigned char*) (A))[2])) << 16) +\
55  (((uint32_t) (((const unsigned char*) (A))[1])) << 24)) +\
56  (((uint64_t) (((const unsigned char*) (A))[0])) << 32))
57 #define mi_uint6korr(A) ((uint64_t)(((uint32_t) (((const unsigned char*) (A))[5])) +\
58  (((uint32_t) (((const unsigned char*) (A))[4])) << 8) +\
59  (((uint32_t) (((const unsigned char*) (A))[3])) << 16) +\
60  (((uint32_t) (((const unsigned char*) (A))[2])) << 24)) +\
61  (((uint64_t) (((uint32_t) (((const unsigned char*) (A))[1])) +\
62  (((uint32_t) (((const unsigned char*) (A))[0]) << 8)))) <<\
63  32))
64 #define mi_uint7korr(A) ((uint64_t)(((uint32_t) (((const unsigned char*) (A))[6])) +\
65  (((uint32_t) (((const unsigned char*) (A))[5])) << 8) +\
66  (((uint32_t) (((const unsigned char*) (A))[4])) << 16) +\
67  (((uint32_t) (((const unsigned char*) (A))[3])) << 24)) +\
68  (((uint64_t) (((uint32_t) (((const unsigned char*) (A))[2])) +\
69  (((uint32_t) (((const unsigned char*) (A))[1])) << 8) +\
70  (((uint32_t) (((const unsigned char*) (A))[0])) << 16))) <<\
71  32))
72 #define mi_uint8korr(A) ((uint64_t)(((uint32_t) (((const unsigned char*) (A))[7])) +\
73  (((uint32_t) (((const unsigned char*) (A))[6])) << 8) +\
74  (((uint32_t) (((const unsigned char*) (A))[5])) << 16) +\
75  (((uint32_t) (((const unsigned char*) (A))[4])) << 24)) +\
76  (((uint64_t) (((uint32_t) (((const unsigned char*) (A))[3])) +\
77  (((uint32_t) (((const unsigned char*) (A))[2])) << 8) +\
78  (((uint32_t) (((const unsigned char*) (A))[1])) << 16) +\
79  (((uint32_t) (((const unsigned char*) (A))[0])) << 24))) <<\
80  32))
81 
82 /* This one is for uniformity */
83 #define mi_int1store(T,A) *((unsigned char*)(T))= (unsigned char) (A)
84 
85 #define mi_int2store(T,A) { uint32_t def_temp= (uint32_t) (A) ;\
86  ((unsigned char*) (T))[1]= (unsigned char) (def_temp);\
87  ((unsigned char*) (T))[0]= (unsigned char) (def_temp >> 8); }
88 #define mi_int3store(T,A) { /*lint -save -e734 */\
89  uint32_t def_temp= (uint32_t) (A);\
90  ((unsigned char*) (T))[2]= (unsigned char) (def_temp);\
91  ((unsigned char*) (T))[1]= (unsigned char) (def_temp >> 8);\
92  ((unsigned char*) (T))[0]= (unsigned char) (def_temp >> 16);\
93  /*lint -restore */}
94 #define mi_int4store(T,A) { uint32_t def_temp= (uint32_t) (A);\
95  ((unsigned char*) (T))[3]= (unsigned char) (def_temp);\
96  ((unsigned char*) (T))[2]= (unsigned char) (def_temp >> 8);\
97  ((unsigned char*) (T))[1]= (unsigned char) (def_temp >> 16);\
98  ((unsigned char*) (T))[0]= (unsigned char) (def_temp >> 24); }
99 #define mi_int5store(T,A) { uint32_t def_temp= (uint32_t) (A),\
100  def_temp2= (uint32_t) ((A) >> 32);\
101  ((unsigned char*) (T))[4]= (unsigned char) (def_temp);\
102  ((unsigned char*) (T))[3]= (unsigned char) (def_temp >> 8);\
103  ((unsigned char*) (T))[2]= (unsigned char) (def_temp >> 16);\
104  ((unsigned char*) (T))[1]= (unsigned char) (def_temp >> 24);\
105  ((unsigned char*) (T))[0]= (unsigned char) (def_temp2); }
106 #define mi_int6store(T,A) { uint32_t def_temp= (uint32_t) (A),\
107  def_temp2= (uint32_t) ((A) >> 32);\
108  ((unsigned char*) (T))[5]= (unsigned char) (def_temp);\
109  ((unsigned char*) (T))[4]= (unsigned char) (def_temp >> 8);\
110  ((unsigned char*) (T))[3]= (unsigned char) (def_temp >> 16);\
111  ((unsigned char*) (T))[2]= (unsigned char) (def_temp >> 24);\
112  ((unsigned char*) (T))[1]= (unsigned char) (def_temp2);\
113  ((unsigned char*) (T))[0]= (unsigned char) (def_temp2 >> 8); }
114 #define mi_int7store(T,A) { uint32_t def_temp= (uint32_t) (A),\
115  def_temp2= (uint32_t) ((A) >> 32);\
116  ((unsigned char*) (T))[6]= (unsigned char) (def_temp);\
117  ((unsigned char*) (T))[5]= (unsigned char) (def_temp >> 8);\
118  ((unsigned char*) (T))[4]= (unsigned char) (def_temp >> 16);\
119  ((unsigned char*) (T))[3]= (unsigned char) (def_temp >> 24);\
120  ((unsigned char*) (T))[2]= (unsigned char) (def_temp2);\
121  ((unsigned char*) (T))[1]= (unsigned char) (def_temp2 >> 8);\
122  ((unsigned char*) (T))[0]= (unsigned char) (def_temp2 >> 16); }
123 #define mi_int8store(T,A) { uint32_t def_temp3= (uint32_t) (A),\
124  def_temp4= (uint32_t) ((A) >> 32);\
125  mi_int4store((unsigned char*) (T) + 0, def_temp4);\
126  mi_int4store((unsigned char*) (T) + 4, def_temp3); }
127 
128 #ifdef WORDS_BIGENDIAN
129 
130 #define mi_float4get(V,M) { float def_temp;\
131  ((unsigned char*) &def_temp)[0]= ((const unsigned char*) (M))[0];\
132  ((unsigned char*) &def_temp)[1]= ((const unsigned char*) (M))[1];\
133  ((unsigned char*) &def_temp)[2]= ((const unsigned char*) (M))[2];\
134  ((unsigned char*) &def_temp)[3]= ((const unsigned char*) (M))[3];\
135  (V)= def_temp; }
136 
137 #define mi_float8get(V,M) { double def_temp;\
138  ((unsigned char*) &def_temp)[0]= ((unsigned char*) (M))[0];\
139  ((unsigned char*) &def_temp)[1]= ((unsigned char*) (M))[1];\
140  ((unsigned char*) &def_temp)[2]= ((unsigned char*) (M))[2];\
141  ((unsigned char*) &def_temp)[3]= ((unsigned char*) (M))[3];\
142  ((unsigned char*) &def_temp)[4]= ((unsigned char*) (M))[4];\
143  ((unsigned char*) &def_temp)[5]= ((unsigned char*) (M))[5];\
144  ((unsigned char*) &def_temp)[6]= ((unsigned char*) (M))[6];\
145  ((unsigned char*) &def_temp)[7]= ((unsigned char*) (M))[7]; \
146  (V)= def_temp; }
147 #else
148 
149 #define mi_float4get(V,M) { float def_temp;\
150  ((unsigned char*) &def_temp)[0]= ((unsigned char*) (M))[3];\
151  ((unsigned char*) &def_temp)[1]= ((unsigned char*) (M))[2];\
152  ((unsigned char*) &def_temp)[2]= ((unsigned char*) (M))[1];\
153  ((unsigned char*) &def_temp)[3]= ((unsigned char*) (M))[0];\
154  (V)= def_temp; }
155 
156 #if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
157 
158 #define mi_float8get(V,M) { double def_temp;\
159  ((unsigned char*) &def_temp)[0]= ((unsigned char*) (M))[3];\
160  ((unsigned char*) &def_temp)[1]= ((unsigned char*) (M))[2];\
161  ((unsigned char*) &def_temp)[2]= ((unsigned char*) (M))[1];\
162  ((unsigned char*) &def_temp)[3]= ((unsigned char*) (M))[0];\
163  ((unsigned char*) &def_temp)[4]= ((unsigned char*) (M))[7];\
164  ((unsigned char*) &def_temp)[5]= ((unsigned char*) (M))[6];\
165  ((unsigned char*) &def_temp)[6]= ((unsigned char*) (M))[5];\
166  ((unsigned char*) &def_temp)[7]= ((unsigned char*) (M))[4];\
167  (V)= def_temp; }
168 
169 #else
170 
171 #define mi_float8get(V,M) { double def_temp;\
172  ((unsigned char*) &def_temp)[0]= ((unsigned char*) (M))[7];\
173  ((unsigned char*) &def_temp)[1]= ((unsigned char*) (M))[6];\
174  ((unsigned char*) &def_temp)[2]= ((unsigned char*) (M))[5];\
175  ((unsigned char*) &def_temp)[3]= ((unsigned char*) (M))[4];\
176  ((unsigned char*) &def_temp)[4]= ((unsigned char*) (M))[3];\
177  ((unsigned char*) &def_temp)[5]= ((unsigned char*) (M))[2];\
178  ((unsigned char*) &def_temp)[6]= ((unsigned char*) (M))[1];\
179  ((unsigned char*) &def_temp)[7]= ((unsigned char*) (M))[0];\
180  (V)= def_temp; }
181 #endif /* __FLOAT_WORD_ORDER */
182 #endif /* WORDS_BIGENDIAN */
183 
184 /* Fix to avoid warnings when sizeof(ha_rows) == sizeof(long) */
185 #define mi_rowstore(T,A) mi_int8store(T, A)
186 #define mi_rowkorr(T) mi_uint8korr(T)
187 
188 #define mi_sizestore(T,A) mi_int8store(T, A)
189 #define mi_sizekorr(T) mi_uint8korr(T)
190