SQLite

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**
** $Id: vdbe.c,v 1.494 2005/10/29 15:48:31 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>
#include "vdbeInt.h"

/*

** If either operand is NULL, the result is NULL.
*/
case OP_BitAnd:                 /* same as TK_BITAND, no-push */
case OP_BitOr:                  /* same as TK_BITOR, no-push */
case OP_ShiftLeft:              /* same as TK_LSHIFT, no-push */
case OP_ShiftRight: {           /* same as TK_RSHIFT, no-push */
  Mem *pNos = &pTos[-1];
  i64 a, b;

  assert( pNos>=p->aStack );
  if( (pTos->flags | pNos->flags) & MEM_Null ){
    popStack(&pTos, 2);
    pTos++;
    pTos->flags = MEM_Null;
    break;

# 2001 September 15
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing expressions.
#
# $Id: expr.test,v 1.46 2005/10/29 15:48:32 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Create a table to work with.
#
execsql {CREATE TABLE test1(i1 int, i2 int, r1 real, r2 real, t1 text, t2 text)}

test_expr expr-1.95 {i1=NULL, i2=8} {55 not between i1 and i2} 1
test_expr expr-1.96 {i1=NULL, i2=3} {coalesce(i1<<i2,99)} 99
test_expr expr-1.97 {i1=32, i2=NULL} {coalesce(i1>>i2,99)} 99
test_expr expr-1.98 {i1=NULL, i2=NULL} {coalesce(i1|i2,99)} 99
test_expr expr-1.99 {i1=32, i2=NULL} {coalesce(i1&i2,99)} 99
test_expr expr-1.100 {i1=1, i2=''} {i1=i2} 0
test_expr expr-1.101 {i1=0, i2=''} {i1=i2} 0

# Check for proper handling of 64-bit integer values.
#
test_expr expr-1.102 {i1=40, i2=1} {i2<<i1} 1099511627776


test_expr expr-2.1 {r1=1.23, r2=2.34} {r1+r2} 3.57
test_expr expr-2.2 {r1=1.23, r2=2.34} {r1-r2} -1.11
test_expr expr-2.3 {r1=1.23, r2=2.34} {r1*r2} 2.8782
set tcl_precision 15
test_expr expr-2.4 {r1=1.23, r2=2.34} {r1/r2} 0.525641025641026
test_expr expr-2.5 {r1=1.23, r2=2.34} {r2/r1} 1.90243902439024

#
do_test expr-11.1 {
  execsql {SELECT typeof(9223372036854775807)}
} {integer}
do_test expr-11.2 {
  execsql {SELECT typeof(9223372036854775808)}
} {real}



finish_test