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Overview
Comment:Fix the encoding of some integers to use the minimum amount of space: -128, -32768, -8388608, -217483648, and -140737488355328.
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SHA1: 2d7c8da5f16e64eaa7b0c2d66898682ea3d102a0
User & Date: drh 2014-11-20 02:58:10
Context
2014-11-20
15:30
Ensure that when the number of cells on a page drops to zero that the freelist and fragment counter are both cleared. Also add evidence marks corresponding to file-format documentation. check-in: ef9fbc08 user: drh tags: trunk
02:58
Fix the encoding of some integers to use the minimum amount of space: -128, -32768, -8388608, -217483648, and -140737488355328. check-in: 2d7c8da5 user: drh tags: trunk
02:18
Add some requirements marks to the record formatting logic. Comment changes only - the code is unaltered. check-in: 9a9627e1 user: drh tags: trunk
Changes
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Changes to src/vdbeaux.c.

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  }
  if( flags&MEM_Int ){
    /* Figure out whether to use 1, 2, 4, 6 or 8 bytes. */
#   define MAX_6BYTE ((((i64)0x00008000)<<32)-1)
    i64 i = pMem->u.i;
    u64 u;
    if( i<0 ){
      if( i<(-MAX_6BYTE) ) return 6;
      /* Previous test prevents:  u = -(-9223372036854775808) */
      u = -i;
    }else{
      u = i;
    }
    if( u<=127 ){
      return ((i&1)==i && file_format>=4) ? 8+(u32)u : 1;
    }
    if( u<=32767 ) return 2;







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  }
  if( flags&MEM_Int ){
    /* Figure out whether to use 1, 2, 4, 6 or 8 bytes. */
#   define MAX_6BYTE ((((i64)0x00008000)<<32)-1)
    i64 i = pMem->u.i;
    u64 u;
    if( i<0 ){


      u = ~i;
    }else{
      u = i;
    }
    if( u<=127 ){
      return ((i&1)==i && file_format>=4) ? 8+(u32)u : 1;
    }
    if( u<=32767 ) return 2;