Drizzled Public API Documentation

myisampack.h

00001 /* Copyright (C) 2000 MySQL AB
00002 
00003    This program is free software; you can redistribute it and/or modify
00004    it under the terms of the GNU General Public License as published by
00005    the Free Software Foundation; version 2 of the License.
00006 
00007    This program is distributed in the hope that it will be useful,
00008    but WITHOUT ANY WARRANTY; without even the implied warranty of
00009    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00010    GNU General Public License for more details.
00011 
00012    You should have received a copy of the GNU General Public License
00013    along with this program; if not, write to the Free Software
00014    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */
00015 
00016 #pragma once
00017 
00018 /*
00019   Storing of values in high byte first order.
00020 
00021   integer keys and file pointers are stored with high byte first to get
00022   better compression
00023 */
00024 
00025 /* these two are for uniformity */
00026 #define mi_sint1korr(A) ((int8_t)(*A))
00027 
00028 #define mi_sint2korr(A) ((int16_t) (((int16_t) (((const unsigned char*) (A))[1])) +\
00029                                   ((int16_t) ((int16_t) ((const char*) (A))[0]) << 8)))
00030 #define mi_sint3korr(A) ((int32_t) (((((const unsigned char*) (A))[0]) & 128) ? \
00031                                   (((uint32_t) 255L << 24) | \
00032                                    (((uint32_t) ((const unsigned char*) (A))[0]) << 16) |\
00033                                    (((uint32_t) ((const unsigned char*) (A))[1]) << 8) | \
00034                                    ((uint32_t) ((const unsigned char*) (A))[2])) : \
00035                                   (((uint32_t) ((const unsigned char*) (A))[0]) << 16) |\
00036                                   (((uint32_t) ((const unsigned char*) (A))[1]) << 8) | \
00037                                   ((uint32_t) ((const unsigned char*) (A))[2])))
00038 #define mi_sint4korr(A) ((int32_t) (((int32_t) (((const unsigned char*) (A))[3])) +\
00039                                   ((int32_t) (((const unsigned char*) (A))[2]) << 8) +\
00040                                   ((int32_t) (((const unsigned char*) (A))[1]) << 16) +\
00041                                   ((int32_t) ((int16_t) ((const char*) (A))[0]) << 24)))
00042 #define mi_sint8korr(A) ((int64_t) mi_uint8korr(A))
00043 #define mi_uint2korr(A) ((uint16_t) (((uint16_t) (((const unsigned char*) (A))[1])) +\
00044                                    ((uint16_t) (((const unsigned char*) (A))[0]) << 8)))
00045 #define mi_uint3korr(A) ((uint32_t) (((uint32_t) (((const unsigned char*) (A))[2])) +\
00046                                    (((uint32_t) (((const unsigned char*) (A))[1])) << 8) +\
00047                                    (((uint32_t) (((const unsigned char*) (A))[0])) << 16)))
00048 #define mi_uint4korr(A) ((uint32_t) (((uint32_t) (((const unsigned char*) (A))[3])) +\
00049                                    (((uint32_t) (((const unsigned char*) (A))[2])) << 8) +\
00050                                    (((uint32_t) (((const unsigned char*) (A))[1])) << 16) +\
00051                                    (((uint32_t) (((const unsigned char*) (A))[0])) << 24)))
00052 #define mi_uint5korr(A) ((uint64_t)(((uint32_t) (((const unsigned char*) (A))[4])) +\
00053                                     (((uint32_t) (((const unsigned char*) (A))[3])) << 8) +\
00054                                     (((uint32_t) (((const unsigned char*) (A))[2])) << 16) +\
00055                                     (((uint32_t) (((const unsigned char*) (A))[1])) << 24)) +\
00056                                     (((uint64_t) (((const unsigned char*) (A))[0])) << 32))
00057 #define mi_uint6korr(A) ((uint64_t)(((uint32_t) (((const unsigned char*) (A))[5])) +\
00058                                     (((uint32_t) (((const unsigned char*) (A))[4])) << 8) +\
00059                                     (((uint32_t) (((const unsigned char*) (A))[3])) << 16) +\
00060                                     (((uint32_t) (((const unsigned char*) (A))[2])) << 24)) +\
00061                         (((uint64_t) (((uint32_t) (((const unsigned char*) (A))[1])) +\
00062                                     (((uint32_t) (((const unsigned char*) (A))[0]) << 8)))) <<\
00063                                      32))
00064 #define mi_uint7korr(A) ((uint64_t)(((uint32_t) (((const unsigned char*) (A))[6])) +\
00065                                     (((uint32_t) (((const unsigned char*) (A))[5])) << 8) +\
00066                                     (((uint32_t) (((const unsigned char*) (A))[4])) << 16) +\
00067                                     (((uint32_t) (((const unsigned char*) (A))[3])) << 24)) +\
00068                         (((uint64_t) (((uint32_t) (((const unsigned char*) (A))[2])) +\
00069                                     (((uint32_t) (((const unsigned char*) (A))[1])) << 8) +\
00070                                     (((uint32_t) (((const unsigned char*) (A))[0])) << 16))) <<\
00071                                      32))
00072 #define mi_uint8korr(A) ((uint64_t)(((uint32_t) (((const unsigned char*) (A))[7])) +\
00073                                     (((uint32_t) (((const unsigned char*) (A))[6])) << 8) +\
00074                                     (((uint32_t) (((const unsigned char*) (A))[5])) << 16) +\
00075                                     (((uint32_t) (((const unsigned char*) (A))[4])) << 24)) +\
00076                         (((uint64_t) (((uint32_t) (((const unsigned char*) (A))[3])) +\
00077                                     (((uint32_t) (((const unsigned char*) (A))[2])) << 8) +\
00078                                     (((uint32_t) (((const unsigned char*) (A))[1])) << 16) +\
00079                                     (((uint32_t) (((const unsigned char*) (A))[0])) << 24))) <<\
00080                                     32))
00081 
00082 /* This one is for uniformity */
00083 #define mi_int1store(T,A) *((unsigned char*)(T))= (unsigned char) (A)
00084 
00085 #define mi_int2store(T,A)   { uint32_t def_temp= (uint32_t) (A) ;\
00086                               ((unsigned char*) (T))[1]= (unsigned char) (def_temp);\
00087                               ((unsigned char*) (T))[0]= (unsigned char) (def_temp >> 8); }
00088 #define mi_int3store(T,A)   { /*lint -save -e734 */\
00089                               uint32_t def_temp= (uint32_t) (A);\
00090                               ((unsigned char*) (T))[2]= (unsigned char) (def_temp);\
00091                               ((unsigned char*) (T))[1]= (unsigned char) (def_temp >> 8);\
00092                               ((unsigned char*) (T))[0]= (unsigned char) (def_temp >> 16);\
00093                               /*lint -restore */}
00094 #define mi_int4store(T,A)   { uint32_t def_temp= (uint32_t) (A);\
00095                               ((unsigned char*) (T))[3]= (unsigned char) (def_temp);\
00096                               ((unsigned char*) (T))[2]= (unsigned char) (def_temp >> 8);\
00097                               ((unsigned char*) (T))[1]= (unsigned char) (def_temp >> 16);\
00098                               ((unsigned char*) (T))[0]= (unsigned char) (def_temp >> 24); }
00099 #define mi_int5store(T,A)   { uint32_t def_temp= (uint32_t) (A),\
00100                               def_temp2= (uint32_t) ((A) >> 32);\
00101                               ((unsigned char*) (T))[4]= (unsigned char) (def_temp);\
00102                               ((unsigned char*) (T))[3]= (unsigned char) (def_temp >> 8);\
00103                               ((unsigned char*) (T))[2]= (unsigned char) (def_temp >> 16);\
00104                               ((unsigned char*) (T))[1]= (unsigned char) (def_temp >> 24);\
00105                               ((unsigned char*) (T))[0]= (unsigned char) (def_temp2); }
00106 #define mi_int6store(T,A)   { uint32_t def_temp= (uint32_t) (A),\
00107                               def_temp2= (uint32_t) ((A) >> 32);\
00108                               ((unsigned char*) (T))[5]= (unsigned char) (def_temp);\
00109                               ((unsigned char*) (T))[4]= (unsigned char) (def_temp >> 8);\
00110                               ((unsigned char*) (T))[3]= (unsigned char) (def_temp >> 16);\
00111                               ((unsigned char*) (T))[2]= (unsigned char) (def_temp >> 24);\
00112                               ((unsigned char*) (T))[1]= (unsigned char) (def_temp2);\
00113                               ((unsigned char*) (T))[0]= (unsigned char) (def_temp2 >> 8); }
00114 #define mi_int7store(T,A)   { uint32_t def_temp= (uint32_t) (A),\
00115                               def_temp2= (uint32_t) ((A) >> 32);\
00116                               ((unsigned char*) (T))[6]= (unsigned char) (def_temp);\
00117                               ((unsigned char*) (T))[5]= (unsigned char) (def_temp >> 8);\
00118                               ((unsigned char*) (T))[4]= (unsigned char) (def_temp >> 16);\
00119                               ((unsigned char*) (T))[3]= (unsigned char) (def_temp >> 24);\
00120                               ((unsigned char*) (T))[2]= (unsigned char) (def_temp2);\
00121                               ((unsigned char*) (T))[1]= (unsigned char) (def_temp2 >> 8);\
00122                               ((unsigned char*) (T))[0]= (unsigned char) (def_temp2 >> 16); }
00123 #define mi_int8store(T,A)   { uint32_t def_temp3= (uint32_t) (A),\
00124                               def_temp4= (uint32_t) ((A) >> 32);\
00125                               mi_int4store((unsigned char*) (T) + 0, def_temp4);\
00126                               mi_int4store((unsigned char*) (T) + 4, def_temp3); }
00127 
00128 #ifdef WORDS_BIGENDIAN
00129 
00130 #define mi_float4get(V,M)   { float def_temp;\
00131                               ((unsigned char*) &def_temp)[0]= ((const unsigned char*) (M))[0];\
00132                               ((unsigned char*) &def_temp)[1]= ((const unsigned char*) (M))[1];\
00133                               ((unsigned char*) &def_temp)[2]= ((const unsigned char*) (M))[2];\
00134                               ((unsigned char*) &def_temp)[3]= ((const unsigned char*) (M))[3];\
00135                               (V)= def_temp; }
00136 
00137 #define mi_float8get(V,M)   { double def_temp;\
00138                               ((unsigned char*) &def_temp)[0]= ((unsigned char*) (M))[0];\
00139                               ((unsigned char*) &def_temp)[1]= ((unsigned char*) (M))[1];\
00140                               ((unsigned char*) &def_temp)[2]= ((unsigned char*) (M))[2];\
00141                               ((unsigned char*) &def_temp)[3]= ((unsigned char*) (M))[3];\
00142                               ((unsigned char*) &def_temp)[4]= ((unsigned char*) (M))[4];\
00143                               ((unsigned char*) &def_temp)[5]= ((unsigned char*) (M))[5];\
00144                               ((unsigned char*) &def_temp)[6]= ((unsigned char*) (M))[6];\
00145                               ((unsigned char*) &def_temp)[7]= ((unsigned char*) (M))[7]; \
00146                               (V)= def_temp; }
00147 #else
00148 
00149 #define mi_float4get(V,M)   { float def_temp;\
00150                               ((unsigned char*) &def_temp)[0]= ((unsigned char*) (M))[3];\
00151                               ((unsigned char*) &def_temp)[1]= ((unsigned char*) (M))[2];\
00152                               ((unsigned char*) &def_temp)[2]= ((unsigned char*) (M))[1];\
00153                               ((unsigned char*) &def_temp)[3]= ((unsigned char*) (M))[0];\
00154                               (V)= def_temp; }
00155 
00156 #if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
00157 
00158 #define mi_float8get(V,M)   { double def_temp;\
00159                               ((unsigned char*) &def_temp)[0]= ((unsigned char*) (M))[3];\
00160                               ((unsigned char*) &def_temp)[1]= ((unsigned char*) (M))[2];\
00161                               ((unsigned char*) &def_temp)[2]= ((unsigned char*) (M))[1];\
00162                               ((unsigned char*) &def_temp)[3]= ((unsigned char*) (M))[0];\
00163                               ((unsigned char*) &def_temp)[4]= ((unsigned char*) (M))[7];\
00164                               ((unsigned char*) &def_temp)[5]= ((unsigned char*) (M))[6];\
00165                               ((unsigned char*) &def_temp)[6]= ((unsigned char*) (M))[5];\
00166                               ((unsigned char*) &def_temp)[7]= ((unsigned char*) (M))[4];\
00167                               (V)= def_temp; }
00168 
00169 #else
00170 
00171 #define mi_float8get(V,M)   { double def_temp;\
00172                               ((unsigned char*) &def_temp)[0]= ((unsigned char*) (M))[7];\
00173                               ((unsigned char*) &def_temp)[1]= ((unsigned char*) (M))[6];\
00174                               ((unsigned char*) &def_temp)[2]= ((unsigned char*) (M))[5];\
00175                               ((unsigned char*) &def_temp)[3]= ((unsigned char*) (M))[4];\
00176                               ((unsigned char*) &def_temp)[4]= ((unsigned char*) (M))[3];\
00177                               ((unsigned char*) &def_temp)[5]= ((unsigned char*) (M))[2];\
00178                               ((unsigned char*) &def_temp)[6]= ((unsigned char*) (M))[1];\
00179                               ((unsigned char*) &def_temp)[7]= ((unsigned char*) (M))[0];\
00180                               (V)= def_temp; }
00181 #endif /* __FLOAT_WORD_ORDER */
00182 #endif /* WORDS_BIGENDIAN */
00183 
00184 /* Fix to avoid warnings when sizeof(ha_rows) == sizeof(long) */
00185 #define mi_rowstore(T,A)    mi_int8store(T, A)
00186 #define mi_rowkorr(T)       mi_uint8korr(T)
00187 
00188 #define mi_sizestore(T,A)   mi_int8store(T, A)
00189 #define mi_sizekorr(T)      mi_uint8korr(T)
00190