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src/libmysql_macosx/include/myisampack.h
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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; either version 2 of the License, or
00006    (at your option) any later version.
00007 
00008    This program is distributed in the hope that it will be useful,
00009    but WITHOUT ANY WARRANTY; without even the implied warranty of
00010    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00011    GNU General Public License for more details.
00012 
00013    You should have received a copy of the GNU General Public License
00014    along with this program; if not, write to the Free Software
00015    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
00016 
00017 /*
00018   Storing of values in high byte first order.
00019 
00020   integer keys and file pointers are stored with high byte first to get
00021   better compression
00022 */
00023 
00024 /* these two are for uniformity */
00025 #define mi_sint1korr(A) ((int8)(*A))
00026 #define mi_uint1korr(A) ((uint8)(*A))
00027 
00028 #define mi_sint2korr(A) ((int16) (((int16) (((uchar*) (A))[1])) +\
00029                                   ((int16) ((int16) ((char*) (A))[0]) << 8)))
00030 #define mi_sint3korr(A) ((int32) (((((uchar*) (A))[0]) & 128) ? \
00031                                   (((uint32) 255L << 24) | \
00032                                    (((uint32) ((uchar*) (A))[0]) << 16) |\
00033                                    (((uint32) ((uchar*) (A))[1]) << 8) | \
00034                                    ((uint32) ((uchar*) (A))[2])) : \
00035                                   (((uint32) ((uchar*) (A))[0]) << 16) |\
00036                                   (((uint32) ((uchar*) (A))[1]) << 8) | \
00037                                   ((uint32) ((uchar*) (A))[2])))
00038 #define mi_sint4korr(A) ((int32) (((int32) (((uchar*) (A))[3])) +\
00039                                   ((int32) (((uchar*) (A))[2]) << 8) +\
00040                                   ((int32) (((uchar*) (A))[1]) << 16) +\
00041                                   ((int32) ((int16) ((char*) (A))[0]) << 24)))
00042 #define mi_sint8korr(A) ((longlong) mi_uint8korr(A))
00043 #define mi_uint2korr(A) ((uint16) (((uint16) (((uchar*) (A))[1])) +\
00044                                    ((uint16) (((uchar*) (A))[0]) << 8)))
00045 #define mi_uint3korr(A) ((uint32) (((uint32) (((uchar*) (A))[2])) +\
00046                                    (((uint32) (((uchar*) (A))[1])) << 8) +\
00047                                    (((uint32) (((uchar*) (A))[0])) << 16)))
00048 #define mi_uint4korr(A) ((uint32) (((uint32) (((uchar*) (A))[3])) +\
00049                                    (((uint32) (((uchar*) (A))[2])) << 8) +\
00050                                    (((uint32) (((uchar*) (A))[1])) << 16) +\
00051                                    (((uint32) (((uchar*) (A))[0])) << 24)))
00052 #define mi_uint5korr(A) ((ulonglong)(((uint32) (((uchar*) (A))[4])) +\
00053                                     (((uint32) (((uchar*) (A))[3])) << 8) +\
00054                                     (((uint32) (((uchar*) (A))[2])) << 16) +\
00055                                     (((uint32) (((uchar*) (A))[1])) << 24)) +\
00056                                     (((ulonglong) (((uchar*) (A))[0])) << 32))
00057 #define mi_uint6korr(A) ((ulonglong)(((uint32) (((uchar*) (A))[5])) +\
00058                                     (((uint32) (((uchar*) (A))[4])) << 8) +\
00059                                     (((uint32) (((uchar*) (A))[3])) << 16) +\
00060                                     (((uint32) (((uchar*) (A))[2])) << 24)) +\
00061                         (((ulonglong) (((uint32) (((uchar*) (A))[1])) +\
00062                                     (((uint32) (((uchar*) (A))[0]) << 8)))) <<\
00063                                      32))
00064 #define mi_uint7korr(A) ((ulonglong)(((uint32) (((uchar*) (A))[6])) +\
00065                                     (((uint32) (((uchar*) (A))[5])) << 8) +\
00066                                     (((uint32) (((uchar*) (A))[4])) << 16) +\
00067                                     (((uint32) (((uchar*) (A))[3])) << 24)) +\
00068                         (((ulonglong) (((uint32) (((uchar*) (A))[2])) +\
00069                                     (((uint32) (((uchar*) (A))[1])) << 8) +\
00070                                     (((uint32) (((uchar*) (A))[0])) << 16))) <<\
00071                                      32))
00072 #define mi_uint8korr(A) ((ulonglong)(((uint32) (((uchar*) (A))[7])) +\
00073                                     (((uint32) (((uchar*) (A))[6])) << 8) +\
00074                                     (((uint32) (((uchar*) (A))[5])) << 16) +\
00075                                     (((uint32) (((uchar*) (A))[4])) << 24)) +\
00076                         (((ulonglong) (((uint32) (((uchar*) (A))[3])) +\
00077                                     (((uint32) (((uchar*) (A))[2])) << 8) +\
00078                                     (((uint32) (((uchar*) (A))[1])) << 16) +\
00079                                     (((uint32) (((uchar*) (A))[0])) << 24))) <<\
00080                                     32))
00081 
00082 /* This one is for uniformity */
00083 #define mi_int1store(T,A) *((uchar*)(T))= (uchar) (A)
00084 
00085 #define mi_int2store(T,A)   { uint def_temp= (uint) (A) ;\
00086                               ((uchar*) (T))[1]= (uchar) (def_temp);\
00087                               ((uchar*) (T))[0]= (uchar) (def_temp >> 8); }
00088 #define mi_int3store(T,A)   { /*lint -save -e734 */\
00089                               ulong def_temp= (ulong) (A);\
00090                               ((uchar*) (T))[2]= (uchar) (def_temp);\
00091                               ((uchar*) (T))[1]= (uchar) (def_temp >> 8);\
00092                               ((uchar*) (T))[0]= (uchar) (def_temp >> 16);\
00093                               /*lint -restore */}
00094 #define mi_int4store(T,A)   { ulong def_temp= (ulong) (A);\
00095                               ((uchar*) (T))[3]= (uchar) (def_temp);\
00096                               ((uchar*) (T))[2]= (uchar) (def_temp >> 8);\
00097                               ((uchar*) (T))[1]= (uchar) (def_temp >> 16);\
00098                               ((uchar*) (T))[0]= (uchar) (def_temp >> 24); }
00099 #define mi_int5store(T,A)   { ulong def_temp= (ulong) (A),\
00100                               def_temp2= (ulong) ((A) >> 32);\
00101                               ((uchar*) (T))[4]= (uchar) (def_temp);\
00102                               ((uchar*) (T))[3]= (uchar) (def_temp >> 8);\
00103                               ((uchar*) (T))[2]= (uchar) (def_temp >> 16);\
00104                               ((uchar*) (T))[1]= (uchar) (def_temp >> 24);\
00105                               ((uchar*) (T))[0]= (uchar) (def_temp2); }
00106 #define mi_int6store(T,A)   { ulong def_temp= (ulong) (A),\
00107                               def_temp2= (ulong) ((A) >> 32);\
00108                               ((uchar*) (T))[5]= (uchar) (def_temp);\
00109                               ((uchar*) (T))[4]= (uchar) (def_temp >> 8);\
00110                               ((uchar*) (T))[3]= (uchar) (def_temp >> 16);\
00111                               ((uchar*) (T))[2]= (uchar) (def_temp >> 24);\
00112                               ((uchar*) (T))[1]= (uchar) (def_temp2);\
00113                               ((uchar*) (T))[0]= (uchar) (def_temp2 >> 8); }
00114 #define mi_int7store(T,A)   { ulong def_temp= (ulong) (A),\
00115                               def_temp2= (ulong) ((A) >> 32);\
00116                               ((uchar*) (T))[6]= (uchar) (def_temp);\
00117                               ((uchar*) (T))[5]= (uchar) (def_temp >> 8);\
00118                               ((uchar*) (T))[4]= (uchar) (def_temp >> 16);\
00119                               ((uchar*) (T))[3]= (uchar) (def_temp >> 24);\
00120                               ((uchar*) (T))[2]= (uchar) (def_temp2);\
00121                               ((uchar*) (T))[1]= (uchar) (def_temp2 >> 8);\
00122                               ((uchar*) (T))[0]= (uchar) (def_temp2 >> 16); }
00123 #define mi_int8store(T,A)   { ulong def_temp3= (ulong) (A),\
00124                               def_temp4= (ulong) ((A) >> 32);\
00125                               mi_int4store((uchar*) (T) + 0, def_temp4);\
00126                               mi_int4store((uchar*) (T) + 4, def_temp3); }
00127 
00128 #ifdef WORDS_BIGENDIAN
00129 
00130 #define mi_float4store(T,A) { ((uchar*) (T))[0]= ((uchar*) &A)[0];\
00131                               ((uchar*) (T))[1]= ((uchar*) &A)[1];\
00132                               ((uchar*) (T))[2]= ((uchar*) &A)[2];\
00133                               ((uchar*) (T))[3]= ((uchar*) &A)[3]; }
00134 
00135 #define mi_float4get(V,M)   { float def_temp;\
00136                               ((uchar*) &def_temp)[0]= ((uchar*) (M))[0];\
00137                               ((uchar*) &def_temp)[1]= ((uchar*) (M))[1];\
00138                               ((uchar*) &def_temp)[2]= ((uchar*) (M))[2];\
00139                               ((uchar*) &def_temp)[3]= ((uchar*) (M))[3];\
00140                               (V)= def_temp; }
00141 
00142 #define mi_float8store(T,V) { ((uchar*) (T))[0]= ((uchar*) &V)[0];\
00143                               ((uchar*) (T))[1]= ((uchar*) &V)[1];\
00144                               ((uchar*) (T))[2]= ((uchar*) &V)[2];\
00145                               ((uchar*) (T))[3]= ((uchar*) &V)[3];\
00146                               ((uchar*) (T))[4]= ((uchar*) &V)[4];\
00147                               ((uchar*) (T))[5]= ((uchar*) &V)[5];\
00148                               ((uchar*) (T))[6]= ((uchar*) &V)[6];\
00149                               ((uchar*) (T))[7]= ((uchar*) &V)[7]; }
00150 
00151 #define mi_float8get(V,M)   { double def_temp;\
00152                               ((uchar*) &def_temp)[0]= ((uchar*) (M))[0];\
00153                               ((uchar*) &def_temp)[1]= ((uchar*) (M))[1];\
00154                               ((uchar*) &def_temp)[2]= ((uchar*) (M))[2];\
00155                               ((uchar*) &def_temp)[3]= ((uchar*) (M))[3];\
00156                               ((uchar*) &def_temp)[4]= ((uchar*) (M))[4];\
00157                               ((uchar*) &def_temp)[5]= ((uchar*) (M))[5];\
00158                               ((uchar*) &def_temp)[6]= ((uchar*) (M))[6];\
00159                               ((uchar*) &def_temp)[7]= ((uchar*) (M))[7]; \
00160                               (V)= def_temp; }
00161 #else
00162 
00163 #define mi_float4store(T,A) { ((uchar*) (T))[0]= ((uchar*) &A)[3];\
00164                               ((uchar*) (T))[1]= ((uchar*) &A)[2];\
00165                               ((uchar*) (T))[2]= ((uchar*) &A)[1];\
00166                               ((uchar*) (T))[3]= ((uchar*) &A)[0]; }
00167 
00168 #define mi_float4get(V,M)   { float def_temp;\
00169                               ((uchar*) &def_temp)[0]= ((uchar*) (M))[3];\
00170                               ((uchar*) &def_temp)[1]= ((uchar*) (M))[2];\
00171                               ((uchar*) &def_temp)[2]= ((uchar*) (M))[1];\
00172                               ((uchar*) &def_temp)[3]= ((uchar*) (M))[0];\
00173                               (V)= def_temp; }
00174 
00175 #if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
00176 #define mi_float8store(T,V) { ((uchar*) (T))[0]= ((uchar*) &V)[3];\
00177                               ((uchar*) (T))[1]= ((uchar*) &V)[2];\
00178                               ((uchar*) (T))[2]= ((uchar*) &V)[1];\
00179                               ((uchar*) (T))[3]= ((uchar*) &V)[0];\
00180                               ((uchar*) (T))[4]= ((uchar*) &V)[7];\
00181                               ((uchar*) (T))[5]= ((uchar*) &V)[6];\
00182                               ((uchar*) (T))[6]= ((uchar*) &V)[5];\
00183                               ((uchar*) (T))[7]= ((uchar*) &V)[4];}
00184 
00185 #define mi_float8get(V,M)   { double def_temp;\
00186                               ((uchar*) &def_temp)[0]= ((uchar*) (M))[3];\
00187                               ((uchar*) &def_temp)[1]= ((uchar*) (M))[2];\
00188                               ((uchar*) &def_temp)[2]= ((uchar*) (M))[1];\
00189                               ((uchar*) &def_temp)[3]= ((uchar*) (M))[0];\
00190                               ((uchar*) &def_temp)[4]= ((uchar*) (M))[7];\
00191                               ((uchar*) &def_temp)[5]= ((uchar*) (M))[6];\
00192                               ((uchar*) &def_temp)[6]= ((uchar*) (M))[5];\
00193                               ((uchar*) &def_temp)[7]= ((uchar*) (M))[4];\
00194                               (V)= def_temp; }
00195 
00196 #else
00197 #define mi_float8store(T,V) { ((uchar*) (T))[0]= ((uchar*) &V)[7];\
00198                               ((uchar*) (T))[1]= ((uchar*) &V)[6];\
00199                               ((uchar*) (T))[2]= ((uchar*) &V)[5];\
00200                               ((uchar*) (T))[3]= ((uchar*) &V)[4];\
00201                               ((uchar*) (T))[4]= ((uchar*) &V)[3];\
00202                               ((uchar*) (T))[5]= ((uchar*) &V)[2];\
00203                               ((uchar*) (T))[6]= ((uchar*) &V)[1];\
00204                               ((uchar*) (T))[7]= ((uchar*) &V)[0];}
00205 
00206 #define mi_float8get(V,M)   { double def_temp;\
00207                               ((uchar*) &def_temp)[0]= ((uchar*) (M))[7];\
00208                               ((uchar*) &def_temp)[1]= ((uchar*) (M))[6];\
00209                               ((uchar*) &def_temp)[2]= ((uchar*) (M))[5];\
00210                               ((uchar*) &def_temp)[3]= ((uchar*) (M))[4];\
00211                               ((uchar*) &def_temp)[4]= ((uchar*) (M))[3];\
00212                               ((uchar*) &def_temp)[5]= ((uchar*) (M))[2];\
00213                               ((uchar*) &def_temp)[6]= ((uchar*) (M))[1];\
00214                               ((uchar*) &def_temp)[7]= ((uchar*) (M))[0];\
00215                               (V)= def_temp; }
00216 #endif /* __FLOAT_WORD_ORDER */
00217 #endif /* WORDS_BIGENDIAN */
00218 
00219 /* Fix to avoid warnings when sizeof(ha_rows) == sizeof(long) */
00220 
00221 #ifdef BIG_TABLES
00222 #define mi_rowstore(T,A)    mi_int8store(T, A)
00223 #define mi_rowkorr(T)       mi_uint8korr(T)
00224 #else
00225 #define mi_rowstore(T,A)    { mi_int4store(T, 0);\
00226                               mi_int4store(((uchar*) (T) + 4), A); }
00227 #define mi_rowkorr(T)       mi_uint4korr((uchar*) (T) + 4)
00228 #endif
00229 
00230 #if SIZEOF_OFF_T > 4
00231 #define mi_sizestore(T,A)   mi_int8store(T, A)
00232 #define mi_sizekorr(T)      mi_uint8korr(T)
00233 #else
00234 #define mi_sizestore(T,A)   { if ((A) == HA_OFFSET_ERROR)\
00235                                 bfill((char*) (T), 8, 255);\
00236                               else { mi_int4store((T), 0);\
00237                                      mi_int4store(((T) + 4), A); }}
00238 #define mi_sizekorr(T)      mi_uint4korr((uchar*) (T) + 4)
00239 #endif
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