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Overview
| Comment: | Floating point values are serialized in big-endian byte order. (CVS 1431) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
acb65297b69c531813287166175fa786 |
| User & Date: | drh 2004-05-21 21:12:42 |
Context
|
2004-05-22
| ||
| 02:55 | Update comments and remove dead code from btree.c (CVS 1432) check-in: 8069caca user: drh tags: trunk | |
|
2004-05-21
| ||
| 21:12 | Floating point values are serialized in big-endian byte order. (CVS 1431) check-in: acb65297 user: drh tags: trunk | |
| 13:39 | Remove the OP_SetFound opcode and its cousins. (CVS 1430) check-in: 5524075e user: drh tags: trunk | |
Changes
Changes to src/vdbeaux.c.
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assert( serial_type!=0 );
/* NULL */
if( serial_type==6 ){
return 0;
}
/* Integer */
if( serial_type<5 ){
i64 i = pMem->i;
len = sqlite3VdbeSerialTypeLen(serial_type);
while( len-- ){
buf[len] = (i&0xFF);
i = i >> 8;
}
return sqlite3VdbeSerialTypeLen(serial_type);
}
/* Float */
if( serial_type==5 ){
/* TODO: byte ordering? */
assert( sizeof(double)==8 );
memcpy(buf, &pMem->r, 8);
return 8;
}
/* String or blob */
assert( serial_type>=12 );
len = sqlite3VdbeSerialTypeLen(serial_type);
memcpy(buf, pMem->z, len);
return len;
................................................................................
/* NULL */
if( serial_type==6 ){
pMem->flags = MEM_Null;
return 0;
}
/* Integer */
if( serial_type<5 ){
i64 i = 0;
int n;
len = sqlite3VdbeSerialTypeLen(serial_type);
if( buf[0]&0x80 ){
for(n=0; n<(8-len); n++){
i = (i<<8)+0xFF;
}
}
for(n=0; n<len; n++){
i = i << 8;
i = i + buf[n];
}
pMem->flags = MEM_Int;
pMem->i = i;
return sqlite3VdbeSerialTypeLen(serial_type);
}
/* Float */
if( serial_type==5 ){
/* TODO: byte ordering? */
assert( sizeof(double)==8 );
memcpy(&pMem->r, buf, 8);
pMem->flags = MEM_Real;
return 8;
}
/* String or blob */
assert( serial_type>=12 );
len = sqlite3VdbeSerialTypeLen(serial_type);
if( serial_type&0x01 ){
pMem->flags = MEM_Str|MEM_Utf8;
pMem->n = len+1;
}else{
................................................................................
*res = sqlite3VdbeKeyCompare(pC->pKeyInfo, len, pCellKey, nKey, pKey);
if( freeCellKey ){
sqliteFree(pCellKey);
}
return SQLITE_OK;
}
|
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assert( serial_type!=0 );
/* NULL */
if( serial_type==6 ){
return 0;
}
/* Integer and Real */
if( serial_type<=5 ){
u64 v;
int i;
if( serial_type==5 ){
v = *(u64*)&pMem->r;
}else{
v = *(u64*)&pMem->i;
}
len = i = sqlite3VdbeSerialTypeLen(serial_type);
while( i-- ){
buf[i] = (v&0xFF);
v >>= 8;
}
return len;
}
/* String or blob */
assert( serial_type>=12 );
len = sqlite3VdbeSerialTypeLen(serial_type);
memcpy(buf, pMem->z, len);
return len;
................................................................................
/* NULL */
if( serial_type==6 ){
pMem->flags = MEM_Null;
return 0;
}
/* Integer and Real */
if( serial_type<=5 ){
u64 v = 0;
int n;
len = sqlite3VdbeSerialTypeLen(serial_type);
if( buf[0]&0x80 ){
v = -1;
}
for(n=0; n<len; n++){
v = (v<<8) | buf[n];
}
if( serial_type==5 ){
pMem->flags = MEM_Real;
pMem->r = *(double*)&v;
}else{
pMem->flags = MEM_Int;
pMem->i = *(int*)&v;
}
return len;
}
/* String or blob */
assert( serial_type>=12 );
len = sqlite3VdbeSerialTypeLen(serial_type);
if( serial_type&0x01 ){
pMem->flags = MEM_Str|MEM_Utf8;
pMem->n = len+1;
}else{
................................................................................
*res = sqlite3VdbeKeyCompare(pC->pKeyInfo, len, pCellKey, nKey, pKey);
if( freeCellKey ){
sqliteFree(pCellKey);
}
return SQLITE_OK;
}
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