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Always convert IEEE NaN into NULL. Ticket #3060. Add test cases to verify

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that this is happening. (CVS 5066)

FossilOrigin-Name: 9b07e59e510e2de39c2081653662fbc654ca6fbb
This commit is contained in:
drh
2008-04-29 00:15:20 +00:00
parent 7d133d8889
commit 2eaf93d34f
6 changed files with 116 additions and 16 deletions
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12
src/expr.c
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@@ -12,7 +12,7 @@
** This file contains routines used for analyzing expressions and
** for generating VDBE code that evaluates expressions in SQLite.
**
** $Id: expr.c,v 1.369 2008/04/25 00:08:38 drh Exp $
** $Id: expr.c,v 1.370 2008/04/29 00:15:21 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -1938,9 +1938,13 @@ static void codeReal(Vdbe *v, const char *z, int n, int negateFlag, int iMem){
char *zV;
assert( !isdigit(z[n]) );
sqlite3AtoF(z, &value);
if( negateFlag ) value = -value;
zV = dup8bytes(v, (char*)&value);
sqlite3VdbeAddOp4(v, OP_Real, 0, iMem, 0, zV, P4_REAL);
if( sqlite3IsNaN(value) ){
sqlite3VdbeAddOp2(v, OP_Null, 0, iMem);
}else{
if( negateFlag ) value = -value;
zV = dup8bytes(v, (char*)&value);
sqlite3VdbeAddOp4(v, OP_Real, 0, iMem, 0, zV, P4_REAL);
}
}
}