myisampack.h
上传用户：romrleung
上传日期：2022-05-23
资源大小：18897k
文件大小：14k
- /* Copyright (C) 2000 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- /*
- Storing of values in high byte first order.
- integer keys and file pointers are stored with high byte first to get
- better compression
- */
- /* these two are for uniformity */
- #define mi_sint1korr(A) ((int8)(*A))
- #define mi_uint1korr(A) ((uint8)(*A))
- #define mi_sint2korr(A) ((int16) (((int16) (((uchar*) (A))[1])) +
- ((int16) ((int16) ((char*) (A))[0]) << 8)))
- #define mi_sint3korr(A) ((int32) (((((uchar*) (A))[0]) & 128) ?
- (((uint32) 255L << 24) |
- (((uint32) ((uchar*) (A))[0]) << 16) |
- (((uint32) ((uchar*) (A))[1]) << 8) |
- ((uint32) ((uchar*) (A))[2])) :
- (((uint32) ((uchar*) (A))[0]) << 16) |
- (((uint32) ((uchar*) (A))[1]) << 8) |
- ((uint32) ((uchar*) (A))[2])))
- #define mi_sint4korr(A) ((int32) (((int32) (((uchar*) (A))[3])) +
- ((int32) (((uchar*) (A))[2]) << 8) +
- ((int32) (((uchar*) (A))[1]) << 16) +
- ((int32) ((int16) ((char*) (A))[0]) << 24)))
- #define mi_sint8korr(A) ((longlong) mi_uint8korr(A))
- #define mi_uint2korr(A) ((uint16) (((uint16) (((uchar*) (A))[1])) +
- ((uint16) (((uchar*) (A))[0]) << 8)))
- #define mi_uint3korr(A) ((uint32) (((uint32) (((uchar*) (A))[2])) +
- (((uint32) (((uchar*) (A))[1])) << 8) +
- (((uint32) (((uchar*) (A))[0])) << 16)))
- #define mi_uint4korr(A) ((uint32) (((uint32) (((uchar*) (A))[3])) +
- (((uint32) (((uchar*) (A))[2])) << 8) +
- (((uint32) (((uchar*) (A))[1])) << 16) +
- (((uint32) (((uchar*) (A))[0])) << 24)))
- #define mi_uint5korr(A) ((ulonglong)(((uint32) (((uchar*) (A))[4])) +
- (((uint32) (((uchar*) (A))[3])) << 8) +
- (((uint32) (((uchar*) (A))[2])) << 16) +
- (((uint32) (((uchar*) (A))[1])) << 24)) +
- (((ulonglong) (((uchar*) (A))[0])) << 32))
- #define mi_uint6korr(A) ((ulonglong)(((uint32) (((uchar*) (A))[5])) +
- (((uint32) (((uchar*) (A))[4])) << 8) +
- (((uint32) (((uchar*) (A))[3])) << 16) +
- (((uint32) (((uchar*) (A))[2])) << 24)) +
- (((ulonglong) (((uint32) (((uchar*) (A))[1])) +
- (((uint32) (((uchar*) (A))[0]) << 8)))) <<
- 32))
- #define mi_uint7korr(A) ((ulonglong)(((uint32) (((uchar*) (A))[6])) +
- (((uint32) (((uchar*) (A))[5])) << 8) +
- (((uint32) (((uchar*) (A))[4])) << 16) +
- (((uint32) (((uchar*) (A))[3])) << 24)) +
- (((ulonglong) (((uint32) (((uchar*) (A))[2])) +
- (((uint32) (((uchar*) (A))[1])) << 8) +
- (((uint32) (((uchar*) (A))[0])) << 16))) <<
- 32))
- #define mi_uint8korr(A) ((ulonglong)(((uint32) (((uchar*) (A))[7])) +
- (((uint32) (((uchar*) (A))[6])) << 8) +
- (((uint32) (((uchar*) (A))[5])) << 16) +
- (((uint32) (((uchar*) (A))[4])) << 24)) +
- (((ulonglong) (((uint32) (((uchar*) (A))[3])) +
- (((uint32) (((uchar*) (A))[2])) << 8) +
- (((uint32) (((uchar*) (A))[1])) << 16) +
- (((uint32) (((uchar*) (A))[0])) << 24))) <<
- 32))
- /* This one is for uniformity */
- #define mi_int1store(T,A) *((uchar*)(T))= (uchar) (A)
- #define mi_int2store(T,A) { uint def_temp= (uint) (A) ;
- ((uchar*) (T))[1]= (uchar) (def_temp);
- ((uchar*) (T))[0]= (uchar) (def_temp >> 8); }
- #define mi_int3store(T,A) { /*lint -save -e734 */
- ulong def_temp= (ulong) (A);
- ((uchar*) (T))[2]= (uchar) (def_temp);
- ((uchar*) (T))[1]= (uchar) (def_temp >> 8);
- ((uchar*) (T))[0]= (uchar) (def_temp >> 16);
- /*lint -restore */}
- #define mi_int4store(T,A) { ulong def_temp= (ulong) (A);
- ((uchar*) (T))[3]= (uchar) (def_temp);
- ((uchar*) (T))[2]= (uchar) (def_temp >> 8);
- ((uchar*) (T))[1]= (uchar) (def_temp >> 16);
- ((uchar*) (T))[0]= (uchar) (def_temp >> 24); }
- #define mi_int5store(T,A) { ulong def_temp= (ulong) (A),
- def_temp2= (ulong) ((A) >> 32);
- ((uchar*) (T))[4]= (uchar) (def_temp);
- ((uchar*) (T))[3]= (uchar) (def_temp >> 8);
- ((uchar*) (T))[2]= (uchar) (def_temp >> 16);
- ((uchar*) (T))[1]= (uchar) (def_temp >> 24);
- ((uchar*) (T))[0]= (uchar) (def_temp2); }
- #define mi_int6store(T,A) { ulong def_temp= (ulong) (A),
- def_temp2= (ulong) ((A) >> 32);
- ((uchar*) (T))[5]= (uchar) (def_temp);
- ((uchar*) (T))[4]= (uchar) (def_temp >> 8);
- ((uchar*) (T))[3]= (uchar) (def_temp >> 16);
- ((uchar*) (T))[2]= (uchar) (def_temp >> 24);
- ((uchar*) (T))[1]= (uchar) (def_temp2);
- ((uchar*) (T))[0]= (uchar) (def_temp2 >> 8); }
- #define mi_int7store(T,A) { ulong def_temp= (ulong) (A),
- def_temp2= (ulong) ((A) >> 32);
- ((uchar*) (T))[6]= (uchar) (def_temp);
- ((uchar*) (T))[5]= (uchar) (def_temp >> 8);
- ((uchar*) (T))[4]= (uchar) (def_temp >> 16);
- ((uchar*) (T))[3]= (uchar) (def_temp >> 24);
- ((uchar*) (T))[2]= (uchar) (def_temp2);
- ((uchar*) (T))[1]= (uchar) (def_temp2 >> 8);
- ((uchar*) (T))[0]= (uchar) (def_temp2 >> 16); }
- #define mi_int8store(T,A) { ulong def_temp3= (ulong) (A),
- def_temp4= (ulong) ((A) >> 32);
- mi_int4store((uchar*) (T) + 0, def_temp4);
- mi_int4store((uchar*) (T) + 4, def_temp3); }
- #ifdef WORDS_BIGENDIAN
- #define mi_float4store(T,A) { ((uchar*) (T))[0]= ((uchar*) &A)[0];
- ((uchar*) (T))[1]= ((uchar*) &A)[1];
- ((uchar*) (T))[2]= ((uchar*) &A)[2];
- ((uchar*) (T))[3]= ((uchar*) &A)[3]; }
- #define mi_float4get(V,M) { float def_temp;
- ((uchar*) &def_temp)[0]= ((uchar*) (M))[0];
- ((uchar*) &def_temp)[1]= ((uchar*) (M))[1];
- ((uchar*) &def_temp)[2]= ((uchar*) (M))[2];
- ((uchar*) &def_temp)[3]= ((uchar*) (M))[3];
- (V)= def_temp; }
- #define mi_float8store(T,V) { ((uchar*) (T))[0]= ((uchar*) &V)[0];
- ((uchar*) (T))[1]= ((uchar*) &V)[1];
- ((uchar*) (T))[2]= ((uchar*) &V)[2];
- ((uchar*) (T))[3]= ((uchar*) &V)[3];
- ((uchar*) (T))[4]= ((uchar*) &V)[4];
- ((uchar*) (T))[5]= ((uchar*) &V)[5];
- ((uchar*) (T))[6]= ((uchar*) &V)[6];
- ((uchar*) (T))[7]= ((uchar*) &V)[7]; }
- #define mi_float8get(V,M) { double def_temp;
- ((uchar*) &def_temp)[0]= ((uchar*) (M))[0];
- ((uchar*) &def_temp)[1]= ((uchar*) (M))[1];
- ((uchar*) &def_temp)[2]= ((uchar*) (M))[2];
- ((uchar*) &def_temp)[3]= ((uchar*) (M))[3];
- ((uchar*) &def_temp)[4]= ((uchar*) (M))[4];
- ((uchar*) &def_temp)[5]= ((uchar*) (M))[5];
- ((uchar*) &def_temp)[6]= ((uchar*) (M))[6];
- ((uchar*) &def_temp)[7]= ((uchar*) (M))[7];
- (V)= def_temp; }
- #else
- #define mi_float4store(T,A) { ((uchar*) (T))[0]= ((uchar*) &A)[3];
- ((uchar*) (T))[1]= ((uchar*) &A)[2];
- ((uchar*) (T))[2]= ((uchar*) &A)[1];
- ((uchar*) (T))[3]= ((uchar*) &A)[0]; }
- #define mi_float4get(V,M) { float def_temp;
- ((uchar*) &def_temp)[0]= ((uchar*) (M))[3];
- ((uchar*) &def_temp)[1]= ((uchar*) (M))[2];
- ((uchar*) &def_temp)[2]= ((uchar*) (M))[1];
- ((uchar*) &def_temp)[3]= ((uchar*) (M))[0];
- (V)= def_temp; }
- #if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
- #define mi_float8store(T,V) { ((uchar*) (T))[0]= ((uchar*) &V)[3];
- ((uchar*) (T))[1]= ((uchar*) &V)[2];
- ((uchar*) (T))[2]= ((uchar*) &V)[1];
- ((uchar*) (T))[3]= ((uchar*) &V)[0];
- ((uchar*) (T))[4]= ((uchar*) &V)[7];
- ((uchar*) (T))[5]= ((uchar*) &V)[6];
- ((uchar*) (T))[6]= ((uchar*) &V)[5];
- ((uchar*) (T))[7]= ((uchar*) &V)[4];}
- #define mi_float8get(V,M) { double def_temp;
- ((uchar*) &def_temp)[0]= ((uchar*) (M))[3];
- ((uchar*) &def_temp)[1]= ((uchar*) (M))[2];
- ((uchar*) &def_temp)[2]= ((uchar*) (M))[1];
- ((uchar*) &def_temp)[3]= ((uchar*) (M))[0];
- ((uchar*) &def_temp)[4]= ((uchar*) (M))[7];
- ((uchar*) &def_temp)[5]= ((uchar*) (M))[6];
- ((uchar*) &def_temp)[6]= ((uchar*) (M))[5];
- ((uchar*) &def_temp)[7]= ((uchar*) (M))[4];
- (V)= def_temp; }
- #else
- #define mi_float8store(T,V) { ((uchar*) (T))[0]= ((uchar*) &V)[7];
- ((uchar*) (T))[1]= ((uchar*) &V)[6];
- ((uchar*) (T))[2]= ((uchar*) &V)[5];
- ((uchar*) (T))[3]= ((uchar*) &V)[4];
- ((uchar*) (T))[4]= ((uchar*) &V)[3];
- ((uchar*) (T))[5]= ((uchar*) &V)[2];
- ((uchar*) (T))[6]= ((uchar*) &V)[1];
- ((uchar*) (T))[7]= ((uchar*) &V)[0];}
- #define mi_float8get(V,M) { double def_temp;
- ((uchar*) &def_temp)[0]= ((uchar*) (M))[7];
- ((uchar*) &def_temp)[1]= ((uchar*) (M))[6];
- ((uchar*) &def_temp)[2]= ((uchar*) (M))[5];
- ((uchar*) &def_temp)[3]= ((uchar*) (M))[4];
- ((uchar*) &def_temp)[4]= ((uchar*) (M))[3];
- ((uchar*) &def_temp)[5]= ((uchar*) (M))[2];
- ((uchar*) &def_temp)[6]= ((uchar*) (M))[1];
- ((uchar*) &def_temp)[7]= ((uchar*) (M))[0];
- (V)= def_temp; }
- #endif /* __FLOAT_WORD_ORDER */
- #endif /* WORDS_BIGENDIAN */
- /* Fix to avoid warnings when sizeof(ha_rows) == sizeof(long) */
- #ifdef BIG_TABLES
- #define mi_rowstore(T,A) mi_int8store(T, A)
- #define mi_rowkorr(T) mi_uint8korr(T)
- #else
- #define mi_rowstore(T,A) { mi_int4store(T, 0);
- mi_int4store(((uchar*) (T) + 4), A); }
- #define mi_rowkorr(T) mi_uint4korr((uchar*) (T) + 4)
- #endif
- #if SIZEOF_OFF_T > 4
- #define mi_sizestore(T,A) mi_int8store(T, A)
- #define mi_sizekorr(T) mi_uint8korr(T)
- #else
- #define mi_sizestore(T,A) { if ((A) == HA_OFFSET_ERROR)
- bfill((char*) (T), 8, 255);
- else { mi_int4store((T), 0);
- mi_int4store(((T) + 4), A); }}
- #define mi_sizekorr(T) mi_uint4korr((uchar*) (T) + 4)
- #endif
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