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Try to avoid using float constants out of range

This commit is contained in:
martin 2014-03-12 20:00:22 +00:00
parent 7a17404a6d
commit 7a16006d41
1 changed files with 9 additions and 1 deletions
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10
external/public-domain/sqlite/dist/sqlite3.c vendored
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@ -7538,6 +7538,7 @@ struct sqlite3_rtree_geometry {
# include <float.h>
# define SQLITE_BIG_DBL DBL_MAX
# define SQLITE_HUGE_DBL DBL_MAX
# define SQLITE_HUGE_COST 1e38
# endif
#endif
#ifndef SQLITE_BIG_DBL
@ -7549,6 +7550,9 @@ struct sqlite3_rtree_geometry {
#ifndef SQLITE_MAX_SQL_LENGTH
# define SQLITE_MAX_SQL_LENGTH 1000000000
#endif
#ifndef SQLITE_HUGE_COST
# define SQLITE_HUGE_COST 1e50
#endif
/*
** The maximum depth of an expression tree. This is limited to
@ -20406,8 +20410,12 @@ SQLITE_PRIVATE void sqlite3VXPrintf(
}
if( realvalue>0.0 ){
LONGDOUBLE_TYPE scale = 1.0;
#if __DBL_MAX_10_EXP__ > 100
while( realvalue>=1e100*scale && exp<=350 ){ scale *= 1e100;exp+=100;}
#endif
#if __DBL_MAX_10_EXP__ > 64
while( realvalue>=1e64*scale && exp<=350 ){ scale *= 1e64; exp+=64; }
#endif
while( realvalue>=1e8*scale && exp<=350 ){ scale *= 1e8; exp+=8; }
while( realvalue>=10.0*scale && exp<=350 ){ scale *= 10.0; exp++; }
realvalue /= scale;
@ -125559,7 +125567,7 @@ static int fts3BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){
** function MATCH in the requested context" error. To discourage
** this, return a very high cost here. */
pInfo->idxNum = FTS3_FULLSCAN_SEARCH;
pInfo->estimatedCost = 1e50;
pInfo->estimatedCost = SQLITE_HUGE_COST;
fts3SetEstimatedRows(pInfo, ((sqlite3_int64)1) << 50);
return SQLITE_OK;
}