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Increase the resolution of the second parameter to the likelihood() SQL

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function (the probability value) so that it can handle probabilities
as small as 0.00000001.  Formerly, it ran out of precision at 0.001.

FossilOrigin-Name: 0f08924fe0c52a85a103f67bee9809e0f8f884b0
This commit is contained in:
drh
2014-10-25 13:42:16 +00:00
parent 051575cbf4
commit d05ab6aacf
5 changed files with 13 additions and 13 deletions
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4
src/resolve.c
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@@ -584,7 +584,7 @@ static int exprProbability(Expr *p){
sqlite3AtoF(p->u.zToken, &r, sqlite3Strlen30(p->u.zToken), SQLITE_UTF8);
assert( r>=0.0 );
if( r>1.0 ) return -1;
return (int)(r*1000.0);
return (int)(r*134217728.0);
}
/*
@@ -716,7 +716,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
** EVIDENCE-OF: R-53436-40973 The likely(X) function is equivalent to
** likelihood(X,0.9375). */
/* TUNING: unlikely() probability is 0.0625. likely() is 0.9375 */
pExpr->iTable = pDef->zName[0]=='u' ? 62 : 938;
pExpr->iTable = pDef->zName[0]=='u' ? 8388608 : 125829120;
}
}
#ifndef SQLITE_OMIT_AUTHORIZATION