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Diffstat (limited to 'include/myisampack.h')
| -rw-r--r-- | include/myisampack.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/include/myisampack.h b/include/myisampack.h new file mode 100644 index 00000000000..1e63b47fc48 --- /dev/null +++ b/include/myisampack.h @@ -0,0 +1,207 @@ +/* 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; } + +#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 + +/* 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 |