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Merge the Mem.r value into the MemValue union as Mem.u.r. Hence, a Mem can

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now store an integer or a real but not both at the same time.  Strings are
still stored in a separate element Mem.z, for now.

FossilOrigin-Name: 4c8c89d7e62aecfe2eb735f7bb114aed6b452847
This commit is contained in:
drh
2014-09-18 17:52:15 +00:00
parent 24a096297e
commit 74eaba4de2
8 changed files with 58 additions and 56 deletions
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24
src/vdbeaux.c
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@@ -1076,7 +1076,7 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){
}else if( pMem->flags & MEM_Int ){
sqlite3_snprintf(nTemp, zTemp, "%lld", pMem->u.i);
}else if( pMem->flags & MEM_Real ){
sqlite3_snprintf(nTemp, zTemp, "%.16g", pMem->r);
sqlite3_snprintf(nTemp, zTemp, "%.16g", pMem->u.r);
}else if( pMem->flags & MEM_Null ){
sqlite3_snprintf(nTemp, zTemp, "NULL");
}else{
@@ -2949,8 +2949,8 @@ u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){
u64 v;
u32 i;
if( serial_type==7 ){
assert( sizeof(v)==sizeof(pMem->r) );
memcpy(&v, &pMem->r, sizeof(v));
assert( sizeof(v)==sizeof(pMem->u.r) );
memcpy(&v, &pMem->u.r, sizeof(v));
swapMixedEndianFloat(v);
}else{
v = pMem->u.i;
@@ -3020,10 +3020,10 @@ static u32 SQLITE_NOINLINE serialGet(
swapMixedEndianFloat(t2);
assert( sizeof(r1)==sizeof(t2) && memcmp(&r1, &t2, sizeof(r1))==0 );
#endif
assert( sizeof(x)==8 && sizeof(pMem->r)==8 );
assert( sizeof(x)==8 && sizeof(pMem->u.r)==8 );
swapMixedEndianFloat(x);
memcpy(&pMem->r, &x, sizeof(x));
pMem->flags = sqlite3IsNaN(pMem->r) ? MEM_Null : MEM_Real;
memcpy(&pMem->u.r, &x, sizeof(x));
pMem->flags = sqlite3IsNaN(pMem->u.r) ? MEM_Null : MEM_Real;
}
return 8;
}
@@ -3368,14 +3368,14 @@ int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const CollSeq *pColl){
return 0;
}
if( (f1&MEM_Real)!=0 ){
r1 = pMem1->r;
r1 = pMem1->u.r;
}else if( (f1&MEM_Int)!=0 ){
r1 = (double)pMem1->u.i;
}else{
return 1;
}
if( (f2&MEM_Real)!=0 ){
r2 = pMem2->r;
r2 = pMem2->u.r;
}else if( (f2&MEM_Int)!=0 ){
r2 = (double)pMem2->u.i;
}else{
@@ -3536,9 +3536,9 @@ static int vdbeRecordCompareWithSkip(
}else if( serial_type==7 ){
double rhs = (double)pRhs->u.i;
sqlite3VdbeSerialGet(&aKey1[d1], serial_type, &mem1);
if( mem1.r<rhs ){
if( mem1.u.r<rhs ){
rc = -1;
}else if( mem1.r>rhs ){
}else if( mem1.u.r>rhs ){
rc = +1;
}
}else{
@@ -3560,11 +3560,11 @@ static int vdbeRecordCompareWithSkip(
}else if( serial_type==0 ){
rc = -1;
}else{
double rhs = pRhs->r;
double rhs = pRhs->u.r;
double lhs;
sqlite3VdbeSerialGet(&aKey1[d1], serial_type, &mem1);
if( serial_type==7 ){
lhs = mem1.r;
lhs = mem1.u.r;
}else{
lhs = (double)mem1.u.i;
}