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Overview
Comment:Improved comments on the elements of the array constant used to implement the sqlite3_value_type() interface.
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SHA3-256: f73a7de7a53f6aa6517221550a9c9882893206edfd7433e80e5fc0f441db9fc4
User & Date: drh 2019-05-03 17:08:16
Context
2019-05-03
21:17
Add the SQLITE_TESTCTRL_RESULT_INTREAL test-control and use it to create the intreal() SQL function in testfixture. Write a few simple tests to prove this all works. TH3 will hold most of the INTREAL tests, probably. (check-in: c9838731 user: drh tags: int-real)
17:08
Improved comments on the elements of the array constant used to implement the sqlite3_value_type() interface. (check-in: f73a7de7 user: drh tags: int-real)
2019-05-02
21:36
Make MEM_IntReal a completely independent type, meaning a floating point value stored as an integer. This fixes a problem with arithmetic within arguments to string functions on indexes of expressions. But it is a big change and needs lots of new testcase() macros for MC/DC and so it is initially put on this branch. (check-in: dba836e3 user: drh tags: int-real)
Changes
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Changes to src/vdbeapi.c. 

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#endif /* SQLITE_OMIT_UTF16 */
/* EVIDENCE-OF: R-12793-43283 Every value in SQLite has one of five
** fundamental datatypes: 64-bit signed integer 64-bit IEEE floating
** point number string BLOB NULL
*/
int sqlite3_value_type(sqlite3_value* pVal){
  static const u8 aType[] = {
     SQLITE_BLOB,     /* 0x00 */
     SQLITE_NULL,     /* 0x01 */
     SQLITE_TEXT,     /* 0x02 */
     SQLITE_NULL,     /* 0x03 */
     SQLITE_INTEGER,  /* 0x04 */
     SQLITE_NULL,     /* 0x05 */
     SQLITE_INTEGER,  /* 0x06 */
     SQLITE_NULL,     /* 0x07 */
     SQLITE_FLOAT,    /* 0x08 */
     SQLITE_NULL,     /* 0x09 */
     SQLITE_FLOAT,    /* 0x0a */
     SQLITE_NULL,     /* 0x0b */
     SQLITE_INTEGER,  /* 0x0c */
     SQLITE_NULL,     /* 0x0d */
     SQLITE_INTEGER,  /* 0x0e */
     SQLITE_NULL,     /* 0x0f */
     SQLITE_BLOB,     /* 0x10 */
     SQLITE_NULL,     /* 0x11 */
     SQLITE_TEXT,     /* 0x12 */
     SQLITE_NULL,     /* 0x13 */
     SQLITE_INTEGER,  /* 0x14 */
     SQLITE_NULL,     /* 0x15 */
     SQLITE_INTEGER,  /* 0x16 */
     SQLITE_NULL,     /* 0x17 */
     SQLITE_FLOAT,    /* 0x18 */
     SQLITE_NULL,     /* 0x19 */
     SQLITE_FLOAT,    /* 0x1a */
     SQLITE_NULL,     /* 0x1b */
     SQLITE_INTEGER,  /* 0x1c */
     SQLITE_NULL,     /* 0x1d */
     SQLITE_INTEGER,  /* 0x1e */
     SQLITE_NULL,     /* 0x1f */
     SQLITE_FLOAT,    /* 0x20 */
     SQLITE_NULL,     /* 0x21 */
     SQLITE_TEXT,     /* 0x22 */
     SQLITE_NULL,     /* 0x23 */
     SQLITE_FLOAT,    /* 0x24 */
     SQLITE_NULL,     /* 0x25 */
     SQLITE_FLOAT,    /* 0x26 */
     SQLITE_NULL,     /* 0x27 */
     SQLITE_FLOAT,    /* 0x28 */
     SQLITE_NULL,     /* 0x29 */
     SQLITE_FLOAT,    /* 0x2a */
     SQLITE_NULL,     /* 0x2b */
     SQLITE_FLOAT,    /* 0x2c */
     SQLITE_NULL,     /* 0x2d */
     SQLITE_FLOAT,    /* 0x2e */
     SQLITE_NULL,     /* 0x2f */
     SQLITE_BLOB,     /* 0x30 */
     SQLITE_NULL,     /* 0x31 */
     SQLITE_TEXT,     /* 0x32 */
     SQLITE_NULL,     /* 0x33 */
     SQLITE_FLOAT,    /* 0x34 */
     SQLITE_NULL,     /* 0x35 */
     SQLITE_FLOAT,    /* 0x36 */
     SQLITE_NULL,     /* 0x37 */
     SQLITE_FLOAT,    /* 0x38 */
     SQLITE_NULL,     /* 0x39 */
     SQLITE_FLOAT,    /* 0x3a */
     SQLITE_NULL,     /* 0x3b */
     SQLITE_FLOAT,    /* 0x3c */
     SQLITE_NULL,     /* 0x3d */
     SQLITE_FLOAT,    /* 0x3e */
     SQLITE_NULL,     /* 0x3f */
  };
#ifdef SQLITE_DEBUG
  {
    int eType = SQLITE_BLOB;
    if( pVal->flags & MEM_Null ){
      eType = SQLITE_NULL;
    }else if( pVal->flags & (MEM_Real|MEM_IntReal) ){








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#endif /* SQLITE_OMIT_UTF16 */
/* EVIDENCE-OF: R-12793-43283 Every value in SQLite has one of five
** fundamental datatypes: 64-bit signed integer 64-bit IEEE floating
** point number string BLOB NULL
*/
int sqlite3_value_type(sqlite3_value* pVal){
  static const u8 aType[] = {
     SQLITE_BLOB,     /* 0x00 (not possible) */
     SQLITE_NULL,     /* 0x01 NULL */
     SQLITE_TEXT,     /* 0x02 TEXT */
     SQLITE_NULL,     /* 0x03 (not possible) */
     SQLITE_INTEGER,  /* 0x04 INTEGER */
     SQLITE_NULL,     /* 0x05 (not possible) */
     SQLITE_INTEGER,  /* 0x06 INTEGER + TEXT */
     SQLITE_NULL,     /* 0x07 (not possible) */
     SQLITE_FLOAT,    /* 0x08 FLOAT */
     SQLITE_NULL,     /* 0x09 (not possible) */
     SQLITE_FLOAT,    /* 0x0a FLOAT + TEXT */
     SQLITE_NULL,     /* 0x0b (not possible) */
     SQLITE_INTEGER,  /* 0x0c (not possible) */
     SQLITE_NULL,     /* 0x0d (not possible) */
     SQLITE_INTEGER,  /* 0x0e (not possible) */
     SQLITE_NULL,     /* 0x0f (not possible) */
     SQLITE_BLOB,     /* 0x10 BLOB */
     SQLITE_NULL,     /* 0x11 (not possible) */
     SQLITE_TEXT,     /* 0x12 (not possible) */
     SQLITE_NULL,     /* 0x13 (not possible) */
     SQLITE_INTEGER,  /* 0x14 INTEGER + BLOB */
     SQLITE_NULL,     /* 0x15 (not possible) */
     SQLITE_INTEGER,  /* 0x16 (not possible) */
     SQLITE_NULL,     /* 0x17 (not possible) */
     SQLITE_FLOAT,    /* 0x18 FLOAT + BLOB */
     SQLITE_NULL,     /* 0x19 (not possible) */
     SQLITE_FLOAT,    /* 0x1a (not possible) */
     SQLITE_NULL,     /* 0x1b (not possible) */
     SQLITE_INTEGER,  /* 0x1c (not possible) */
     SQLITE_NULL,     /* 0x1d (not possible) */
     SQLITE_INTEGER,  /* 0x1e (not possible) */
     SQLITE_NULL,     /* 0x1f (not possible) */
     SQLITE_FLOAT,    /* 0x20 INTREAL */
     SQLITE_NULL,     /* 0x21 (not possible) */
     SQLITE_TEXT,     /* 0x22 INTREAL + TEXT */
     SQLITE_NULL,     /* 0x23 (not possible) */
     SQLITE_FLOAT,    /* 0x24 (not possible) */
     SQLITE_NULL,     /* 0x25 (not possible) */
     SQLITE_FLOAT,    /* 0x26 (not possible) */
     SQLITE_NULL,     /* 0x27 (not possible) */
     SQLITE_FLOAT,    /* 0x28 (not possible) */
     SQLITE_NULL,     /* 0x29 (not possible) */
     SQLITE_FLOAT,    /* 0x2a (not possible) */
     SQLITE_NULL,     /* 0x2b (not possible) */
     SQLITE_FLOAT,    /* 0x2c (not possible) */
     SQLITE_NULL,     /* 0x2d (not possible) */
     SQLITE_FLOAT,    /* 0x2e (not possible) */
     SQLITE_NULL,     /* 0x2f (not possible) */
     SQLITE_BLOB,     /* 0x30 (not possible) */
     SQLITE_NULL,     /* 0x31 (not possible) */
     SQLITE_TEXT,     /* 0x32 (not possible) */
     SQLITE_NULL,     /* 0x33 (not possible) */
     SQLITE_FLOAT,    /* 0x34 (not possible) */
     SQLITE_NULL,     /* 0x35 (not possible) */
     SQLITE_FLOAT,    /* 0x36 (not possible) */
     SQLITE_NULL,     /* 0x37 (not possible) */
     SQLITE_FLOAT,    /* 0x38 (not possible) */
     SQLITE_NULL,     /* 0x39 (not possible) */
     SQLITE_FLOAT,    /* 0x3a (not possible) */
     SQLITE_NULL,     /* 0x3b (not possible) */
     SQLITE_FLOAT,    /* 0x3c (not possible) */
     SQLITE_NULL,     /* 0x3d (not possible) */
     SQLITE_FLOAT,    /* 0x3e (not possible) */
     SQLITE_NULL,     /* 0x3f (not possible) */
  };
#ifdef SQLITE_DEBUG
  {
    int eType = SQLITE_BLOB;
    if( pVal->flags & MEM_Null ){
      eType = SQLITE_NULL;
    }else if( pVal->flags & (MEM_Real|MEM_IntReal) ){

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