myisampack.h
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上传日期:2007-04-14
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文件大小:9k
- /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; 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
- */
- #define mi_sint2korr(A) (int16) (((int16) ((uchar) (A)[1])) +
- ((int16) ((int16) (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) (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))
- #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);
- *(((T)+2))=(char) (def_temp);
- *((T)+1)= (char) (def_temp >> 8);
- *((T)+0)= (char) (def_temp >> 16);
- /*lint -restore */}
- #define mi_int4store(T,A) { ulong def_temp= (ulong) (A);
- *((T)+3)=(char) (def_temp);
- *((T)+2)=(char) (def_temp >> 8);
- *((T)+1)=(char) (def_temp >> 16);
- *((T)+0)=(char) (def_temp >> 24); }
- #define mi_int5store(T,A) { ulong def_temp= (ulong) (A),
- def_temp2= (ulong) ((A) >> 32);
- *((T)+4)=(char) (def_temp);
- *((T)+3)=(char) (def_temp >> 8);
- *((T)+2)=(char) (def_temp >> 16);
- *((T)+1)=(char) (def_temp >> 24);
- *((T)+0)=(char) (def_temp2); }
- #define mi_int6store(T,A) { ulong def_temp= (ulong) (A),
- def_temp2= (ulong) ((A) >> 32);
- *((T)+5)=(char) (def_temp);
- *((T)+4)=(char) (def_temp >> 8);
- *((T)+3)=(char) (def_temp >> 16);
- *((T)+2)=(char) (def_temp >> 24);
- *((T)+1)=(char) (def_temp2);
- *((T)+0)=(char) (def_temp2 >> 8); }
- #define mi_int7store(T,A) { ulong def_temp= (ulong) (A),
- def_temp2= (ulong) ((A) >> 32);
- *((T)+6)=(char) (def_temp);
- *((T)+5)=(char) (def_temp >> 8);
- *((T)+4)=(char) (def_temp >> 16);
- *((T)+3)=(char) (def_temp >> 24);
- *((T)+2)=(char) (def_temp2);
- *((T)+1)=(char) (def_temp2 >> 8);
- *((T)+0)=(char) (def_temp2 >> 16); }
- #define mi_int8store(T,A) { ulong def_temp3= (ulong) (A),
- def_temp4= (ulong) ((A) >> 32);
- mi_int4store((T),def_temp4);
- mi_int4store((T+4),def_temp3);
- }
- #ifdef WORDS_BIGENDIAN
- #define mi_float4store(T,A) { *(T)= ((byte *) &A)[0];
- *((T)+1)=(char) ((byte *) &A)[1];
- *((T)+2)=(char) ((byte *) &A)[2];
- *((T)+3)=(char) ((byte *) &A)[3]; }
- #define mi_float4get(V,M) { float def_temp;
- ((byte*) &def_temp)[0]=(M)[0];
- ((byte*) &def_temp)[1]=(M)[1];
- ((byte*) &def_temp)[2]=(M)[2];
- ((byte*) &def_temp)[3]=(M)[3];
- (V)=def_temp; }
- #define mi_float8store(T,V) { *(T)= ((byte *) &V)[0];
- *((T)+1)=(char) ((byte *) &V)[1];
- *((T)+2)=(char) ((byte *) &V)[2];
- *((T)+3)=(char) ((byte *) &V)[3];
- *((T)+4)=(char) ((byte *) &V)[4];
- *((T)+5)=(char) ((byte *) &V)[5];
- *((T)+6)=(char) ((byte *) &V)[6];
- *((T)+7)=(char) ((byte *) &V)[7]; }
- #define mi_float8get(V,M) { double def_temp;
- ((byte*) &def_temp)[0]=(M)[0];
- ((byte*) &def_temp)[1]=(M)[1];
- ((byte*) &def_temp)[2]=(M)[2];
- ((byte*) &def_temp)[3]=(M)[3];
- ((byte*) &def_temp)[4]=(M)[4];
- ((byte*) &def_temp)[5]=(M)[5];
- ((byte*) &def_temp)[6]=(M)[6];
- ((byte*) &def_temp)[7]=(M)[7];
- (V)=def_temp; }
- #else
- #define mi_float4store(T,A) { *(T)= ((byte *) &A)[3];
- *((T)+1)=(char) ((byte *) &A)[2];
- *((T)+2)=(char) ((byte *) &A)[1];
- *((T)+3)=(char) ((byte *) &A)[0]; }
- #define mi_float4get(V,M) { float def_temp;
- ((byte*) &def_temp)[0]=(M)[3];
- ((byte*) &def_temp)[1]=(M)[2];
- ((byte*) &def_temp)[2]=(M)[1];
- ((byte*) &def_temp)[3]=(M)[0];
- (V)=def_temp; }
- #if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
- #define mi_float8store(T,V) { *(T)= ((byte *) &V)[3];
- *((T)+1)=(char) ((byte *) &V)[2];
- *((T)+2)=(char) ((byte *) &V)[1];
- *((T)+3)=(char) ((byte *) &V)[0];
- *((T)+4)=(char) ((byte *) &V)[7];
- *((T)+5)=(char) ((byte *) &V)[6];
- *((T)+6)=(char) ((byte *) &V)[5];
- *((T)+7)=(char) ((byte *) &V)[4];}
- #define mi_float8get(V,M) { double def_temp;
- ((byte*) &def_temp)[0]=(M)[3];
- ((byte*) &def_temp)[1]=(M)[2];
- ((byte*) &def_temp)[2]=(M)[1];
- ((byte*) &def_temp)[3]=(M)[0];
- ((byte*) &def_temp)[4]=(M)[7];
- ((byte*) &def_temp)[5]=(M)[6];
- ((byte*) &def_temp)[6]=(M)[5];
- ((byte*) &def_temp)[7]=(M)[4];
- (V)=def_temp; }
- #else
- #define mi_float8store(T,V) { *(T)= ((byte *) &V)[7];
- *((T)+1)=(char) ((byte *) &V)[6];
- *((T)+2)=(char) ((byte *) &V)[5];
- *((T)+3)=(char) ((byte *) &V)[4];
- *((T)+4)=(char) ((byte *) &V)[3];
- *((T)+5)=(char) ((byte *) &V)[2];
- *((T)+6)=(char) ((byte *) &V)[1];
- *((T)+7)=(char) ((byte *) &V)[0];}
- #define mi_float8get(V,M) { double def_temp;
- ((byte*) &def_temp)[0]=(M)[7];
- ((byte*) &def_temp)[1]=(M)[6];
- ((byte*) &def_temp)[2]=(M)[5];
- ((byte*) &def_temp)[3]=(M)[4];
- ((byte*) &def_temp)[4]=(M)[3];
- ((byte*) &def_temp)[5]=(M)[2];
- ((byte*) &def_temp)[6]=(M)[1];
- ((byte*) &def_temp)[7]=(M)[0];
- (V)=def_temp; }
- #endif /* __FLOAT_WORD_ORDER */
- #endif /* WORDS_BIGENDIAN */
- /* Fix to avoid warnings when sizeof(ha_rows) == sizeof(long) */
- #ifdef BIG_TABLE
- #define mi_rowstore(T,A) mi_int8store(T,A)
- #define mi_rowkorr(T,A) mi_uint8korr(T)
- #else
- #define mi_rowstore(T,A) { mi_int4store(T,0); mi_int4store(((T)+4),A); }
- #define mi_rowkorr(T) mi_uint4korr((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((T)+4)
- #endif