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An optimization to sqlite3VdbeSerialType(). (CVS 2278)

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FossilOrigin-Name: db36773830cc81c38b78d1776a495d49475523be
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drh
2005-01-26 17:47:02 +00:00
parent f87d01abe9
commit 5742b63e4a
3 changed files with 14 additions and 13 deletions
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11
src/vdbeaux.c
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@@ -1500,11 +1500,12 @@ u32 sqlite3VdbeSerialType(Mem *pMem){
/* Figure out whether to use 1, 2, 4, 6 or 8 bytes. */
# define MAX_6BYTE ((((i64)0x00010000)<<32)-1)
i64 i = pMem->i;
if( i>=-127 && i<=127 ) return 1;
if( i>=-32767 && i<=32767 ) return 2;
if( i>=-8388607 && i<=8388607 ) return 3;
if( i>=-2147483647 && i<=2147483647 ) return 4;
if( i>=-MAX_6BYTE && i<=MAX_6BYTE ) return 5;
u64 u = i<0 ? -i : i;
if( u<=127 ) return 1;
if( u<=32767 ) return 2;
if( u<=8388607 ) return 3;
if( u<=2147483647 ) return 4;
if( u<=MAX_6BYTE ) return 5;
return 6;
}
if( flags&MEM_Real ){